if you carry ladders you cant be ladderless. if you ask me how can people call themselves window cleaners without some sort of ladder theres always a flat roof somewhere you need to jump up on. Dont get me wrond im 80% waterfed but still carry triple 10's and a six foot A frame.
I never use a ladder to clean a window... I just use mine to access flat roofs now and again.But I would never put it "ladderless" on my van to be honest as I think it might put some people off calling you if they think you can't access some windows over a flat roof.Andy
What about virtually ladderless