I too have the Hornady collet puller. A couple years ago I was given 800 .223 reloads from a guy who's dad reloaded them. Only problem was, he forgot to resize the brass. He didn't feel like pulling them apart and rebuilding them. So he gave them to me. I started out with an inertial puller and I quickly learned that was NOT gonna work. I bought the Hornady puller and in a matter of a 3-4 hours, I had the bullets pulled, seperated and decapped. I wouldn't have done it any other way. I now have 900 crappy Egyptian 9mm rounds out there that I got CHEAP, because half of them are "duds" according to the guy I got them from. I'm going to go out this weekend, disassemble them, polish the brass and bullets, resize and reload them. Again, no way I could do it without the Hornady puller.
Have I ever used the grip and pull Bullet puller? No. but I can't imagine it's any easier than the Hornady puller.