gloves for me. i get callouses real easy without them. call it girly, but hey, it gets the girls. out of 5 different girls i'd been with before i used gloves, not one liked the callouses at all. actually, all of them found it really annoying and said it was quite uncomfortable when i'd be touching/fondling them when i had the callouses.
so you guys thinking they're "manly" and that they will somehow accomplish anything for you, think again. won't do anything for showing off either as who the hell will be looking at your hands? if you have people looking at your hands as opposed to your biceps, chest, etc, you need to be lifting more and stop focusing on your manly, rough callouses guys.
all callouses did for me was annoy me and make me eventually pick at them when they got too big. then you look like an idiot all day picking at your hands and others have no idea what you're doing. next thing, people say you have obsessive compulsive disorder or something. trust me guys, there are plenty of good legitimate reasons to use gloves other than being "girly".