I'd say that, typically, they're similar enough to basically be interchangeable. The wild card, though, is that ABS and PVC can vary in density, hardness, etc. I pulled the table below from a plastics supplier's website. And don't pay any attention to the highlighted part. It's like that on the site for some reason.Do you know what the difference in feel is between abs and pvc? I have a cue that I think has an abs ferrule, it is soft but it also plays kind of dead, not a lot of "feel" on a shot