I bought a Sam last year as my first Rivendell and admit I am a bit jealous of the seat post being changed to the more common 27.2 and the wider fork. I struggled to get Honjo fenders to fit over my 43mm tires due to the fork and had to go with SKS which are great, but I'm hoping to try another model of the honjo some day.
As for my impressions of the Sam, over all I absolutely love it both aesthetically and functionally. I had it built for my "do all, hop on and go bike". I mostly zip around on bike paths, paved country roads, and gravel/dirt roads (no single track). Basically I wanted a light-ish bike that I could put wide smooth tires on, ride up-right in comfort but still be able to go long distances. I believe the Homer or even the Roadini would have sufficed for my use but I just wasn't a fan of the long reach calipers that are on my wife's homer. I wasn't impressed with their stopping performance for my weight and it seemed like I'd be limited on future options. I had a possibly unjustifiable concern of future sourcing of long reach calipers if R559s are ever discontinued. Plus, while I was deciding between these 3 bikes, the bronzey green color was announced for the Sam and I fell in love with it which sealed the deal. It turned out to be the right decision for the time being, because I ride with a front mounted child carrier and zip around with my 30lb 2 year old which I may have been hesitant to try on the lighter bike models. I have about 600 miles on the bike and it is performing exactly as I hoped. Its the only bike I have owned where almost every time I approach or depart it, I stop and gaze in admiration, its a functional piece of art to me. I find myself using multiple hand positions on the albatross bars frequently. Ill use the regular grips often on bike paths, but on longer stretches or if there is a head wind I will alternate to the front tape wrapped round the curved part of the bars, this puts me into a very similar position as riding in the hoods on a drop bar. My longest ride is 50 miles with very little discomfort, which was reassuring because I hadnt seen many people discuss longer distance riding w/ albatross bars. There is a rather large dilemma I am experiencing however. This bike really could be my main do all bike forever. But sometimes on long straight country roads with a head wind, I wish I had a more pure road bike w/ drops. And since I have Riv fever I find myself dreaming about what my next Riv would be to satisfy this. The issue is, I cant decide if I would put drops on the Sam and get a Platypus/Atlantis for the upright ride, but a Sam as a pure road bike may be heavier than necessary. The other option would be keep my Sam as is, and get a stripped homer as my "road bike", but this puzzles me because the Sam has a shorter wheel base, it seems wrong to have a longer wheel base road bike and shorter wheel based upright build. I almost wonder if the Homer/Roadini + Platypus/Atlantis would be the best combo. My solution so far is to let those thoughts escape my head and stick to 1 bike because I really do love my Sam.