It looks like there are three reviews on LL Bean's site regarding it and two are positive, one is slightly negative. It looks to be a knock-off of the Fishpond Wastach Tech Pack with a few differences to get around copyright/patent rules (addition of a waist belt, removal of some pockets, etc. As a huge Fishpond fan I hate to see their designs being duplicated in this way though I can't say LL Bean is the only company doing it. That being said if you are kitchen sink kind of person this is the pack for you.
"My father was very sure about certain matters pertaining to the universe. To him, all good things - trout as well as eternal salvation - come by grace and grace comes by art and art does not come easy." Norman Maclean, A River Runs Through It