I'm very curious to see what it can do and as a tech gadget it looks awesome. However I've tried handheld gaming before and it simply can't hold my attention if I'm not stuck on a plane with nothing else to do. I would play with it for 10 minutes, then never use it again. I'll stick to (stationary) gaming laptops, suits me fine.
I do hope it becomes a success as that means more development in low power (and thus low heat) PC components.