Been using it on a UL notebook for a couple of days now.
It is different. Some things are intuitive, others not.
Biggest issue I have is the OS seems tablet centric - by that I mean it really limits what you can do.
I do everything from surf / games / email to work.
Work stuff I use a lot of ie, MSO, SQL and other work apps (ex: SAP).
On Win8, I find I cannot open and run everything I am used to at the same time.
OUCH! WTH?!?! OMG!!!

I can positively say at this time WIn8 is not very useful from a work pc perspective.
Time will tell, for now, it's a hobby.