I'm with all of youse. In any caliber, the more support the chamber has, the steeper the feedramp, and so the more finicky the feeding will be. Take a ramped barrel and duplicate the angles and radii of an unramped setup, and you have what is at least theoretically a better feeding situation, since there is not the 2-part surface for the round to follow up. And if you consider that the requisite gap, on an unramped setup, between the frame's ramp and the barrel throat, can be eliminated with a ramped barrel, well, that means that the lower part of the ramp on a ramped barrel can be at a slightly more advantageous angle.
I notice that Infinity is offering ramped barrels with a concave form to the ramp. This gets a slightly better angle down low where it's needed, but preserves the lower rear of the chamber-- this looks like it ought to be a good thing but I have not tried one.
I think it's mostly academic in a carry gun anyway-- I do not see a problem getting an unramped barrel to feed whatever, from Flying Ashtrays to Keith wadcutters (given good magazines). Guess you might could say that though if a bull barrel is a good thing for its added weight, a ramped bull barrel would be better since it adds a little mass to the barrel...?