Well here's my take on it...
I would sell them or shoot them at water jugs, melons and other fun stuff, but I wouldn't use them for HD/SD. You could get a ton of money out of them and spend it on other cool stuff.
The reason I wouldn't use them for SD is I could see a prosecutors dream unfolding if, God forbid, you ever had to use them. I would hate to be on the stand trying to explain why I used evil Black Talon cop killer rounds that were outlawed due to their extremely cruel design. I know and you know that any HP is designed to stop a threat and all are, give or take a little, the same. They are designed to tear through flesh and kill people, which would only make sense in a situation where deadly force was justified and needed. However, a prosecutor could spin that in a nasty way. Plus, let's face it, your average jury wouldn't know much about ammo, and it could get you off to a bad start just trying to justify using these rounds that were deemed inhumane or whatever.