I wonder about the 140 G2 personally because both of my magazines specifically have PT-140 G2 on them. Oddly enough, I tried a 92 magazine in my 140, the catch hole is too low but the follower did engage the slide lock. So they could be a viable alternative if someone decided to try modifying one to lock in.
Oh yeah. 33 rounds just as fast as you'd like to pull the trigger! Being much (MUCH) easier to load than the 12-rounders it came with I was skeptical about the spring and figured it'd have issues chambering the last few rounds but I didn't have any issues! Well, except for how unwieldy a fully loaded 32-round magazine is!