From what I understand, Wolf uses a laquer coating on their cases. If you're planning on hosing, that chamber can get fairly hot and the laquer can get a little gummy.
I hate the primer sealer they use as it leaves a red residue all over the breechface. No big deal, but it just bugs me for some reason.
Frankly, I think it has the potential to be a little hard on extractor hooks.
I've shot a lot of Wolf and have never had an issue - whether it be Glocks, Sig's, Beretta's, HK's, Kimber's, Steyr's, what have you.
That being said, I haven't used it for a few years now.