I use the Labradar tri-pod for both bench and prone shooting and find it quite good for both. Very sturdy and functional.
I typically place a small sandbag on one of the legs to ensure it doesn't get bumped off the bench. Would hate to see it end up on the ground.
The legs only extend to about 12" giving a height of about 18" max to the plate, so using it for standing shooting won't work.