Ridge4me and Kid, you are both correct. I looked this up today. A draping air bag comes down from above the doorways, but another air bag is actually in the sides of the front seats. If you notice when you get into your truck, there is a small label at the outside shoulder area of the front seats that says, "airbag."
This seems to rule out putting seat covers on unless someone is aware of a break away design that would not interfere with the side airbags. Ouch, I guess I'll get used to being burned by the leather.