Mr eckes: These all remind me of those fitness machines, look great in the adverts, spend their life stashed away after 1 use.
Far better to use your brain and work out an easy way to do tricky shifts
Com: Civillised: The first one looks as though the handles look weak as hell. Guaranteed it has cheap ass bearings too..
Com:Pro:As somebody with a back wrecked by a bit of a boom in Military service I can see the need and use for these systems. Realise how much you take strength and ability for granted and how much you miss them when they are gone. The silver stair climber very interesting. Anything that makes life easier is a good thing and I salute the engineers/ designers for taking the time and attention to detail.