I've used it.
I've used Wolf and probably will continue to use it in my Bersa Thunder .380, with no feed/fire problems at all. In my experience it's fairly dirty compared to Winchester white-box ammo, though. As for the sparks flying, no, I haven't experienced that. And since the Bersa always gets cleaned after a few hours at the range, the excess dirt is more of a nuisance than a problem. I could see if you planned on firing hundreds of rounds without cleaning, it might be an issue. At 5.99 per 50 compared to 9.00 for the Winchester, it's hard to resist not picking up a box or two of Wolf when I am in the gunshop. Accuracy wise, POI is the same as the Winchester, and the Speer I use for carry ammo -- at 7 yards.
Joel