Never seen the specific make/model ur using but I've never had good luck finding level ground when I've taken a chair. U have to sit down and move all around to get the legs "set" into the ground and it seems to be unlevel/cockeyed more often than not. If u are carring a separate backpack anyway IMO saddle tethered in at ground level still offer better options.
Cool piece of gear either way
Cool piece of gear either way