Anyone using Crossover for gaming, CS?

http://www.codeweavers.com/products/cxmac/

I just heard about this program and it looks like a great option for running certain Win-only applications, even if they are a little sluggish. I run very few Win apps any more, but one of the biggest things I use Windows for is gaming, especially Counter-Stikre Source. If anyone is using Crossover to play this, I'd like to hear your opinion on its performance. The website gives it a bronze metal, that doesn't sound encouraging.

I use CrossOver to run Counter Strike v1.6 on my Macbook and it works fine. My Macbook has 1 GB RAM/2.0 Core Duo and the only problem I run into when I'm playing is a LITTLE jittering that you can only notice if you focus on the walls when you run past them. <---Probably sounds weird but you will see what I mean if you decide to give it a try.

EDIT: Oh and Counter Strike v1.6 is rated Silver on the CodeWeavers site while CS:Source is rated as Bronze.

I've used CS 1.6 aswell. Great.

Thanks!