Dont worry I have been in consistant touch with Chuck about insulated coveralls and bibs.
They do have a insulated Buckswede jacket that is toasty warm.


Copied from the ASAT web site:
We're so confident in our product, we offer you this unparalleled guarantee ..."Wear ASAT® exclusively for one year, and if you don't see more game than you ever have wearing anything else... we'll buy it back . GUARANTEED!" Where in ANY industry would a company offer such a guarantee if their product didn't work?

All I can say is buy with confidence.