I also have a Kurt Kinetic Road Machine and I concur that it is stable and smooth. A lot smoother than many of the trainers I've been set up on for fits, etc.

I don't have terribly wide experience though.

You can switch bikes on a trainer fairly easily. You generally will use the skewer that comes with the trainer rather than your regular rear skewer, both because the trainer can scratch up the finish on you pretty anodized skewer and because sometimes regular skewers don't fit into the trainer as well. He will probably also want to put a slick on his rear wheel since knobby tires can be very buzzy.

If you can set it up in front of a TV, go for it. It can get a little tedious. I also find it harder (at the same speed) than riding on the road, for some reason. I think I'm a freak.