My $0.02: I'm not sure how much of a concern the FD cable routing is. I wouldn't consider it of prime importance. I think it's a marketing tool more than anything. I mean, with a TT-routed cable you then have a pulley on the back of you seattube right above the bottom-bracket junction, which is a prime sludge collection area. I might be wrong, however I didn't experience any issues with the routing on my bike this past season.

Then again, if it helps you narrow things down and get a new ride, who am I to stop you?? When are you hoping to have this thing up and running? In time for Paris-Ancaster?!?