There is nothing *wrong* with Wolf ammo that makes it any more unsafe/damaging to your firearm than any of the other economically priced ammo. Most of the crap you hear is heresay/goofy logic/internet elitism at best.
It *is* cheaper, lower quality ammo (defined by "dirtiness" of the powders, case quality, and consistency). If you are willing to accept the performance penalties associated prior as trade for the monies saved, then it is fine ammo and would most likely serve you well.
Just about all of my firearms have ran Wolf ammo at one time or another, and some run it pretty much exclusively. The only exception being guns that were built to perform at an exceedingly high standard of accuracy (as opposed to utmost reliability in adverse conditions), which sometimes have problems with feed/function due to a myriad of self induced (by me) design bottlenecks (tight chambers, low mass slides/recoil springs/etc), which shouldn't be blamed on the ammo itself.
In short, I've shot 1000's of rounds of it with no complaints. In many cases, it affords me more shooting time that wouldn't be available were I shooting premium ammunition. Provided it shoots in your gun (and it satisfies whatever performance requirements you have), I would run it without qualm. If your gun wasn't built with the express purpose of shooting single types of rounds (IE: Tailored Handloads), then I would personally be upset if it DIDN"T shoot it.