I guess maybe we are just rough on stuff, but there is no way I would trust an oven bag to keep things like my spare clothes or puffy stuff dry. I have seen those bags rupture in the oven on multiple occasions from steam alone. Maybe as a liner inside another dry bag, but never as the primary way to keep water out of essential gear. For much of the season, we plan on getting our everyday clothing wet, but this is only an option because I know I have dry socks, dry base layers and dry puffy clothing to wear at night. A slip during a creek crossing (or an overturned packraft) means anything that isn't 100% waterproof is going to be soaked. The 55L OR dry comp only weighs 7 oz, and while I imagine the oven bags are lighter, the assurance of dry gear is well worth the extra ounces to me.