Using InstaMorph for Gadgeteer enclosures, frames, etc

Has anybody used this thing before?

http://www.amazon.com/InstaMorph-Moldable-Plastic-12-oz/dp/B003QKLJKQ/ref=sr_1_1?ie=UTF8&qid=1330113474&sr=8-1

I see some potential for Gadgeteer projects.

I remember getting pressure blisters the first time I worked with that stuff. It turns out really well but you need patience and hard work to mold anything worth while. Particularly smooth edges; which is what gave me such a hard time.