Pumpkins with edible seeds.

I feel an experiment coming on - feel free to join me!
I want to see if shop bought edible pumpkin seeds are viable, so I'm going to put some on damp kitchen paper and see if they sprout. If they do, it would save a lot of expense, tracking down the few commercial seeds that are on sale.

Are the shop bought seeds 'edible seed' pumpkins or normal pumpkin seed mechanically husked? How can you tell?