I just bought a used bear vault more for demonstration purposes. It fits but it’s hard and doesn’t feel right in my pack.
I’ll be using the UrSack Almighty for my LT hike. Yes your food can get crushed by a bear but the UrSack only weighs about 1/3 of a bear can is approved and most importantly it keeps out the absolutely most dangerous predators on the trail, mice and chipmunks. Another benefit I like is that the UrSack shrinks down as my food goes down. As far as sitting goes I just scored a free Klymit V Seat cushion and I’m hammock camping so comfort won’t be an issue, getting up in the morning will be