I think it's one of those things you'd get tired of.
It would be really cool to start but the novelty would soon be gone. I doubt it can do as thorough a job as an upright but maybe I'm wrong.
It reminds me of the time I almost bought a "Total Gym" at Costco. I stood in line with the thing under my arm for a few minutes and then marched it back to where I got it.
I realized that if I was serious about getting into shape, I could walk or run up our long driveway and do push ups and sit-ups. Sure it would be nice and shiny for awhile and fun to play with, but it just end up under the bed next to the dusty bar- bells.
Come to think of it, if I had a Roomba, it wouldn't be so dusty under there. :)
