I agree with Steve in doubting that Grant would build a thin tubed low trail rando bike. That's just not the kind of bike Grant designs. Just like if you went to Mitch Pryor and asked for a high-trail stiffer all-rounder, it's not the bike he's comfortable building. Grant designs Rivendells. Mitch Pryor designs M.A.P.'s
Side note, I wonder, Steve how do you feel about the fact that the M.A.P. Campeur option includes a diagatube. The horror! :-)
If you'll excuse the metaphor: I wouldn't ask a rabbi to perform a Catholic wedding. It's something he probably could do, being generally educated about religious ceremonies, but it's not something he'd be comfortable doing, and it would be no surprise that when you asked him to perform your catholic wedding, he politely decline to do it. Let the rabbi do what a rabbi is comfortable doing. Grant is comfortable designing Rivendells. Grant thinks it is possible to build a bike that is too flexy, so he designs bikes that are flexy enough, but not too flexy. Grant has done more first hand experimentation on the T-word than most people, and he's happy with the way he designs bikes.
Even though I own and like my skinny tubed low-trail bike, if I win the raffle, I will have Grant design me a Rivendell. I'd tell him the kind of riding I want to do on it, and I'd be very specific on all the clearances I want, but I'd still plan on the bike being a Rivendell, not a Rene Herse.