Who cares ? This sounds like a product in search of an application.
For the vast majority of people choosing a carry/duty weapon, the convenience of a handgun outweighs its marginal effectiveness. Chances are you'll want close-in stopping power on unarmored individuals, and this means big, heavy, fast hollow points.
If you expect to encounter armor, take a rifle/carbine to the party.
These armor penetrating handgun projectiles are very specialized (say as a backup piece for entry teams known to be facing armor). The barrel length alone makes them inconvenient, and I'd have doubts about their stopping power. Until the use of armor becomes hugely more prevalent amongs the bad guys, this product is a loser, IMHO.
By the way, what's to stop you making your own ? Get some suitable loading dies made (Dillon et al), a custom barrel reamer (Clymer) some virgin 10mm brass and a bunch of .223 heads. Or do something similar with a revolver round, and save yourself the headach of trying to make the gun cycle such a weak round.