hand paws to line or not to line?

I've made several pairs of hand paws (though it -has- been a while) and I was just wondering is it much better to line them? If so what material do you use? Is it much harder to do so? How would one go about it? I remember one time many years ago, my friend and I made these -huge- paws and I think we lined them with gloves (the long kind that go up to your elbow) but I can't remember for the life of me how we managed that. However, the paws I'm making right now are just short average hand paws.

Meep!