My wife and I are looking to purchase a piece of exercise equipment for our workout area in our house. Originally the idea was that we would get a treadmill, as that was something we could both use fairly easily. I've made no secret that I want a trainer for my bike (probably going to go with the Kurt Kinetic) but we can't really afford both at the same time... the trainer would have to wait for at least the winter. I was happy with this, as I probalby wouldn't want to use a trainer until that time. Unfortunately, all the treadmills we looked at which had all the features we were looking for would probably end up pushing that purchase to sometime in the winter, and then who knows when we would get the trainer. So, unless we settle for a cheaper treadmill or find a great deal on craig's list or ebay, if I want the trainer I'll have to convincer her that it would benefit us both.
My question is: how much of a pain is it to hook a bike up to a trainer? I have a road bike with 700c wheels, and she's got a hard tail mtb with 26" wheels -> would this require some extra step when switching between bikes that would make it more of a pain? Does anybody have any practical experience with switching out bikes on a trainer?