Yes, yes, another tire discussion, we know how that usually goes, so I'll just keep it simple and to the point.
THE BASICS
From
http://www.planetx.co.uk/i/q/TYVIVOHY you can buy the Vittoria Hyper (previously under the Randonneur line, but now under Voyager; it's my understanding that they're the same tire, just renamed) for ~$20 each. Shipping from UK is ~$6 with Royal Mail if you order up to 3; larger orders incur much more expensive shipping costs. This is a folding tire, 120 TPI, with reflective tape on the sidewall. I'm no tire expert, but I want to say it's a knobless mostly slick tire with some hairy stubbles and sparse water displacing grooves.
THIRD PARTY QUOTES
I'm limiting this to quotes from people who I believe are knowledgeable and respectable in this subject. I'm cherry-picking here, so forgive me if I take things a little bit out of context.
* Jan Heine (Bicycle Quarterly/Compass Biycle):
"We haven’t tested the Vittoria Randonneur Hyper. According to Vittoria, it weighs just 60 g more than the Grand Bois Cyprès in the same size, so at least there isn’t a lot of extra rubber. The "Triple Puncture Protection" makes me a bit concerned. Now if Vittoria offered the Open CX Corsa in wider widths (currently, it only goes up to 25 mm), that would be a tire!"
"I also have heard good things about the Voyager Hyper, and we’ll include it in a future test. I am a little concerned that it’s still labeled as a “touring” tire. I really would like to see Vittoria make a 32 and 38 mm version of the Open CX Corsa, perhaps with a little extra material on the tread for greater durability. Of course, that is the tire we had in mind when we made the Compass Barlow Pass Extralight..."
* Irving Pham (Boyz on the Hoods):
"I also really happen to like the Vittoria Randonneur Hyper (also goes by Voyager Hyper) 700x35 tires. They are plenty comfy, measure true to width, feature a nice reflective sidewall stripe and are quite durable. It really is an intriguing tire option that seems somewhere in between (in price and quality) the Panaracer Pasela/Resist Nomad choices and the higher end Gran Bois/Compass offerings."
* aktiv Radfahren: There was supposed to be a test done by this German publication, mostly against Continental and Schwalbe offerings in City and Touring category, and supposedly the Hyper won both in speed and ride quality, but suffered more punctures. I can only find comments and forum posts to this effect, though, not the original article.
PERSONAL OPINION
I've only ridden the Vittoria Randonneur Hyper 700x38c (40-622), a slightly fatter tire under the old name, and only for ~200 miles, some mixed terrain but no RUSA brevet yet. Not a whole lot of experience, so you can stop reading right there if you don't wish to waste any more of your time.
The MSO is the tire I've had the most experience on, including a super series last year which included Old Caz 300k, and a Santa Cruz Randonneurs 200k and 400k that I jazzed up with some mixed terrain bonus miles. I don't have much bad things to say about this tire, except maybe that the little knobbies wear a bit fast, but from what I understand this is to be expected the closer you are to the MTB side of the tire knobbiness spectrum.
The Grand Bois Cyprès were ridden for ~250 miles (no flats, by the way), and they're great tires for that size, fast and smooth, but I downsized from the MSO to the Grand Bois, so I also experienced some disadvantages, mainly that I can no longer be as adventurous on my adventure bike. Having already ridden thousands of miles on the bike at this point, I don't want to give up the main reason why I bought it in the first place, so I swapped the Grand Bois out for the Hypers. I'd probably put them back on for some all pavement brevet that I just need to get done, where it's all business and no adventure, but I'll sooner just ride my road bike in that case.
The last ride I did on the Hyper was on the Boyz on the Hood Summer Skool Sessions #2, the Peninsula MTBrevet (
http://www.boyzonthehoods.com/?p=2704 ). Most people had knobbies on this ride. I did have to walk my bike on some sections of loose dirt and rock gardens, but it looked like so did some people according to the ride reports and pictures. In any case, I was held back more by my bike handling skills and my 50/34x12-30 gearing than my tire choice. And for whatever it's worth, I did the whole ride under the same tire pressure (45-50 psi), in contrast to the few others who can be heard releasing some air at regroup points, presumably in search of better traction/comfort.
CONCLUSION
Here's a cheap tire option, possibly a very good deal if the words from these people mean anything. If nothing else it can be a good option for a backup tire for a mixed terrain ride, just fold it and stuff it in your pocket. About the size and weight of a 21st century American bagel, doesn't taste as good but probably more useful in some circumstances.
Yogy