I think they're pretty cool and I wouldn't mind having one.
I've had enough squirrely moments on my bike around town due to gravel and oil on the road that I realy wouldn't mind the extra stability the Can-Am provides. I love the sound and power of a nice powerful crotch rocket but I hate the riding position (and I'm sure I would get real stupid on one and hurt myself, ha-ha), so the Can-Am would be a much better fit for me.
Seems like it would be a lot nicer too when you have a passenger on the back.