Using a case like the Manvex isn't as slim light or sleek as going naked with your Surface Pro, but if you drop it your $1200 baby won't be as busted either. Really comes down to your risk aversion vs your compulsion for aesthetics. Manvex is awesome case as cases go but it's still a case.
So , how does the Manvex work on the lap with a Type cover? Does it protect it adequately protect the SP with and without the touch/type attached? Does insulating the SP with the Manvex significantly affect heat retention? I've held off because I really wanted a back and corner case that uses the touch/type for a complete travel cover, but I guess it is not happening.