I've not tried the boots, and I've only limited experience with Thinsulate.

But, in my encounters with it, I've always come away less than pleased. Seems like I always had cold spots, it binded up on me, it's useless when wet... the list goes on. Granted, my experiences were about 10-15 years ago, with gloves.

Maybe it's gotten better? I dunno, but I'm not about to waste more of my money on a product I've written off in my head.

Perhaps others have positive experiences.