The seat is sturdy enough to hold a decent sized adult. It is as comfortable as any tripod camp stool can be, but it serves its purpose well for a trail side break.
Now if only it reclined and had a foot rest....
Below you can see the Hiking Staff Seat
in conjunction with the light weight Backpacking Table
described in the following Instructable: http://www.instructables.com/id/Camp-Table-for-Backpacking/