Dave, I don't know what people are like where you train, and I'm assuming based on your location, and the location of prowristwraps, that there's a reason you're pushing the strap idea so hard (not just on this thread, but others), but in MY gym no one uses straps and a lot of the guys hold well over 500 pounds on a regular basis, for both 1-3 rep max movements, as well as higher rep movements (dimels, reverse bands deads, rack pulls, etc...).
If I had to choose between wraps and chalk, I'd take chalk.
I also agree that blanket statements about the effectiveness of certain moves or techniques are faulted by definition (whether it's a front squat or a wrist wrap).