I was there yesterday. There was more snow than I expected. 6 - 8 inch ruts the majority of the way in. I don't think a 2WD or low clearance AWD would have much success.
I was up there the same day. A GPS was very handy (but not completly neccessary) in the trees but once the summit was in view it's was pretty easy to pick a ridge. The ski down was excellent.