no good for pulling over roofs.
but i had a play with one at JTF the other day, i was really impressed. i had it fully extended up the racking, fit under your arm really nicely and not that heavy.
just have 2 clips per rung that lock into place and then you slide them across with your thumbs to drop one rung at a time, or if you can drop a lower one first to bring a section down at a time.
i liked it, and they are tiny when collapsed
