The other brands I have seen use a wax and oil that turns rancid. It will stink up everthing in your closet and vehicle.
I've got a Filson Logger jacket and find oiled canvas kinda heavy and stiff for daily use. For rolling around under a jeep in the bush it's perfect but for driving and being comphy it's a little too heavy duty. I would not want to fall in a river and have to swim with it on for example. I do get compliments on it every time I wear it. The Filson stuff I own is endless. Off the top of my head: Belt, wallet, jacket, shirts, hats, small and extra large duffle bags, Pullman luggage. Even my laptop bag is Filson. It's the best stuff if you use it daily and it's got a warranty for life. If you want heavy oiled canvas then save up or find a sale.