Cheers. Any weight saving would be good. The TDF has the heaviest ass in the world, though I may find that's just the low end mech and whatnot on it... It's as much vanity as anything else, and wanting a project. At some point I'll want a new winter bike, and this is as good a way to get there.
I think between your and touch's comments I'll have to accept I'm paying for the fun of re-building a bike, and any benefits in terms of ride quality and so on will be a bonus.
I was looking at building a new winter bike a while back and looked at this frame. Not sure the clearance with guards is enough - i believe it's similar in that regard to the Ribble winter frame. I wanted the option of running up to 28mm with guards on and the only frame i found that fit the bill was a Kinesis TK2. Shelved the idea in the end for financial reasons but it's worth thinking about.