I love scrambled threads.
But yeah. I move with the Lofstrand crutches, which are the ones with horseshoe-shaped cuffs. I used to have a
Quickie for long "walks" of maybe over a mile (2AM escapes to Denny's for a burger and an orange Sprite), when I was at Sacramento State. The thing is with wheelchairs, at least in my experience, you either get a great fit or a terrible fit. Not much in between. A great fitting chair is liberating. A poorly fitting chair is almost a nuisance on your life.
As far as exhibits or games that try to mimic disability, I'm a little mixed. For instance, blindfolding an AB (able-body, heh) is not going to give much of a glimpse of the life of a blind person, who, say, is used to it (blind since birth or whatever). But I can see a wheelchair exhibit being a bit different. Back home in San Diego, the city's Therapeutic Recreation department's AB employees have often gone around in wheelchairs just to kind of keep fresh as to how it's like.
As long as there's a disclaimer that these disabilit-simulation activities are only a glimpse into disability, it probably can only help our cause.