A funny thing in all of this is that Rivendell Cycles really likes IRD's compact-specific front derailler, that nicely follows the curve of a slightly smaller large chainring (optimized for a 48t as opposed to a 53, I think). Now, Riv admittedly likes intentionally-designed form, and beauty as well, and IRD compact FD has these. But it's funny because Riv tends to set themselves up against marketing-hype of the bike industry. At least they admit there's no real functional advantage to it.