I've no need for them (just not a competitive type, so live with flush-fit always) but have seen many of the Wilson 10 rounders used by many folks. A longish time ago (15 years? Longer?) saw 2-3 of them loose that front stop on conventional use. Claims that you shouldn't "hammer it home" with the slide open but come on, it's steel on steel! Then they apparently fixed it, never seen that or other problems at all. Yes, they feed as well as the 8 rounders, so: perfectly. The stop-block-failure mags also worked when carefully inserted.
FWIW, honored warranty claims aside, at least one person re-attached the stop block themselves (out of curiosity IIRC) by... brazing? I don't think it was a weld. Anyway, even that worked fine. No warping or anything. They are pretty solid mags even when people try to abuse them with hot work.