Looks to be a good design
X2 on above...great idea that one, and something i'd not seen before either.
i'll stick with the little 3 step ladder we currently have that fits nicely in the front box on top of our camper (after a cut 50mm from it's feet that is...lol), but would certainly look at getting one of them if all i had was a pole carrier like what's pictured in the link.