Seriously though, a friend of mine has Moots road and CX bikes built up with SRAM Red, carbon forks, semi-traditional wheels, 'normal' bars and saddle. They both look absolutely beautiful, definite 'future retro classics'. I'll try to get pics of them side-by-side. I think that the old silver SRAM Rival group would be good on a frame like this though I'm not as keen on the black suff. Having said that there's enough shiny Ti there to carry a black gruppo.
The point being, a frame and fork like this is so sleek and STI units and road mechs are pretty unobtrusive by now. So unlike many mtbs, you don't really clean up the apprearance of a road bike by converting to singlespeed. What you loose though is the ability to go out on truly spectacular and exhilirating long, winding, rolling rides and actually enjoy them rather than spilling your guts up on every climb and wishing you were home! You've got the Beacons just up the way, and the Valleys are great too as long as the bike doesn't get nicked!
And be warned - if you so much as think about using a word like 'fixed' or 'fixie' in the same sentence as this frame, then I'll head straight to the shop and liberate it before any harm can be done. Using as much force as necessary. Don't say you weren't warned.