I've never seen so much time spent talking over gloves, straps, etc. I said it earlier and I'll say it again...you're a MAN, act like it! Grab that barbell with your bare mits and hold on for dear life! I have really small hands and I have pulled 605 from the floor in competition and 755 out of the rack just below the knee...all without straps. If you use straps, ditch them. Your grip strength will catch up. It only took about a month for my grip strength to catch up. Having a strong grip will make you stronger on a variety of different lifts, and it is also something that can prove to be quite useful in everyday life. Or as I like to calll it, functional strength. Now lose the sand in your vag, chalk up, and pull like a man!
And I have to disagree with the comments made about not using an over/under grip on deadlift. If a bicep tears from using an over/under grip on the deadlift, it's because the bicep is the weak link. How do you eliminate this? Train your biceps. Hammer curls are an excellent accomadating exercise for overall bicep strength and health and great for forearm strength as well.