I don't know if it does clump faster, since I don't clean the box until I get home from work, but I have noticed that the clumps are a little firmer than with the regular one.
I've only seen it at Petsmart, which is a little further than the Petco where I usually get it, but it's worth the trek. I'll be getting that one from now on. The only problem is making sure they actually have it in stock when I go.
There are only two rules at my house: House rule #1. Cats rule. House rule #2. See rule #1.