This is a VERY old CZ problem, and in fact, this was the reason why I stopped using the 85Combat for IPSC and moved to other guns about 1.5-2 years ago.
I've been using/shooting various SP01s for anout 3/4 of a year now, without this problem. I am not, however, using CZ mags - I use only Tanfoglio mags. I think I was somehow successful in replicating this problem in my SP01 when using CZ mags (either the more recent ones with a plastic base, or the older all-steel ones). So, if this is what you're worried about, no problem, just use Tanfoglio mags, and you'll be fine. You can use your 2 CZ mags as the stripper and the last one on your belt...