Using it now, and at first I was kinda not liking it, but then I went to the fluid version and like it a lot!
No huge changes in function over the old skin, but a nice change of pace visually, kinda refreshing.
Fluid works great for me, I usually browse at 1920x1200 on a 28" screen. I'll try the fixed an fluid on my smaller laptop screen later. Please leave the option for fluid and don't make it fixed only!