I use two layers of W&N, no Insulbrite, for gift potholders...and cut up an old cotton mattress pad for my own.
I see absolutely no need to spend extra money on a 'specialty product' for inside potholders, especially something that only works when it's facing a certain way. Are you supposed to label your gift with a little tag that tells the giftee which side to put in their hand? *giggle*