DWhite: grip tape the bar right where you grab it. Electrician's friction tape (it's like black sticky cloth) is the stuff. A little gets on your hands when lifting heavy, but so what?
Then, THEN, when you can't even grip with the tape, you can use wraps to assist the lift. You want to build as much grip strength from the initial lifts as you can. I'd guess that for your size, up to around 300-315 you should be able to go nekkid. If not, do some hangs for grip. Now if I'd just follow my own advice...I'd be pulling this 380 without straps!
I've done this cycle with lower squats myself and found it beneficial, even though I'm not squatting my former weights yet; I'm squatting more ATG than I was able to before.