Lift-straps are a band-aid fix to a crucial flaw in your strength. I don't think they should ever be used by anyone for anything. Fix the root of the problem before trying to put a patch over it.
Also, have you tried lifting without the gloves? Can you use chalk at your gym? From my experience gloves have prevented me from lifting heavier weights as their bulk got in the way. Then again I'm a pretty avid raw lifter. Heck, I think I've only used a weight belt twice when I 1RM-ed out at 435lbs at ~165lbs back when I was 17! Now I'm a weak and fat 23 year old at ~195lbs with a three rep max of 385 and a 3 rep max of 285lbs on full back squats... Oh the joys of college and what it does to you.