If you feel like giving it a shot make sure your chore jacket can take a liner and still fit you. A HK tailor should have zero problems fitting an M-65 liner in there. These liners run about $25 on ebay. I found my unlined waxed Gustin pretty useless, but with an M-65 liner it has become one of my late fall/winter favorites.In the winter we're having at the moment, that might work...