Last I checked, triops were pretty dirty. They present a bit of a health hazard to people, too, in terms of harboring bacteria, etc. I wouldn't risk it, personally.
I thought the conditions that were conducive for triops ended up making them a problem. I guess if you grow them differently than what the instructions say (which I've never tried), they could potentially be used. I've never tried and I would never try it with traditional growout conditions. That's me, though.
Edit: The last time I messed with these guys was when I was about 10, so take my memory with a grain of salt.