well, right now its a 24' ext ladder, I just started a gig on a municipal crew a few months ago (seattle parks and rec) and that ladder is stored inside a walk-in utility truck with a bunch of other gear, hurts my back just thinking about stooping inside that thing and taking it off its hooks. Prior to that I worked in Portland as a crew leader for General Tree Service for three or so years. I drove an asplundh style rig with the ext ladder/ pole saw pole pruner comp. next to the chip box gate. i then had an 8',12' and 16' orchard ladder secured to the top of the rig, along with 3 sheets of plywood. If we were doing a lot of ornamental work on a landscape the first thing off the truck was the 8' orchard ladder, or whatever was appropiate, I never really saw a use for straight ladders that were so short If I wanted low access I would just use the orchard ladder. There's lots of scenarios where an ext or straight ladder is necessary, roof access for emergency jobs, etc. and theres been lots of times I've used ladders to save energy, I just don't use them routinely for the purpose of labor saving, and that's just me, When I ran my own tree service in Minnesota, did I have ladders? absolutely, and I would recommend anyone starting a tree service to have them but i wouldn't recommend relying on them, especially if youre a beginner and trying to develop strong climbing skills.