2.2 on HTC Evo 4g?

So the htc evo 4g has 2.1, and like I was at the IO conference, and got the phone for free
But anywho, they were showing off all the awesome stuff, but they aren't giving us 2.2 yet lol...

So does anybody know if I can flash the Nexus's 2.2 on my HTC Evo 4g? Or on my Droid?
I mean I don't see why I can't...
I don't care for Sense UI.

 

That's pretty lame, I thought the hardware inside was pretty much identical, other than like the camera, and hdmi out and stuff like that. Also there is no CDMA version of the Nexus? I didn't know that actually.

Also I could brick my phone just by putting the updflash.zip on the root of my sdcard and flash it? That seems a little dangerous to me.