It is slightly laggy on the 3G so should be better on the 3GS. But this opens an entire realm of possibilities if we can now dual boot iPhones... Custom phone firmware in the future? I will attempting to boot android on my phone tonight.
Yea, but they keep plugging the jailbreakme.com loophole. That's what I'm saying, every update has a fix for the JB and you have to wait for the dev team, or others, to get up to speed.