Thanks to everyone who helped me out with advice after my last DL workout!
I got some wrestling shoes ($15 on clearance at The Sport's Authority) and I learned how to pull myself down to the bar for this workout.
I pulled 595 very solidly today, and narrowly missed 625 at the lockout due to grip failure and a torn callous. My raw best 2 weeks ago was 550! I'm not going to say that I got 75 pounds out of my suit, but it sure helped.
So, I guess I need to work on rack pulls, shrugs, and grip work in order to bring up my lockout stregth. 900, here I come!