Another angle here ...
No interest, because it just really isn't necessary for the P-32.
I had multiple issues with my P3-AT to get it reliable, one of which was dropping mags & wearing out the mag catch. I spent a good sum on an aluminum catch & guess what it wore that out too ... subsequently I just simply became proficient at changing the plastic mag catch out ... and of course I use proper "KT technique" in I always depress the catch as I insert the magazine (no slamming it home as I do in robust handguns like my Springfield, Smith & Wesson, Colt or CZ) and I wiggle the thing vigorously ensuring solid seating ... I learned how to use my P3-AT so that it would be reliable ... it's not hard to put a new catch in there & I have spares available ... I simply consider it an expendable item in a P3-AT.
The substantial percussion at firing experienced in the P3-AT is not the case in the P-32. My little .32 pocket friend has never had a malfunction of any type. IMO the design margin in the P-32 is simply superior to the P3-AT ... my P-32 does not need a metal mag catch.
Cheers, CJ