One of the most misunderstood titles, ever.
I've recently started the PS3 version, and while, it doesn't have the editor, it's addictive as ever, and I'm in the process of unlocking everything all over again. If you can find a copy of gripshift, by all means, do yourself a favor and pick it up. It's going to be one of those games that people look back on and say "why did we think that was so horrible?"