Excellent idea (IMHO). Hate having to dress, organise a time/a route, avoid incredible heat (in our summers), awful rain and storms this winter, uneven surfaces and actually regularly find the time! We all need to walk but it's a good feeling to know that the essential exercise can be done easily and regularly with other outings then being a bonus.
I agree that the lack of handles/supports on a small piece of equipment (much neater than a treadmill) can feel a bit off-putting, but with something that slides under a sofa, which can be used any time day or night it's worth persevering at the beginning if you feel a bit unsteady. Mine slides out and is switched right across the front of a sofa (of course, something to land on in an emergency!) and I put the back of a heavy wooden chair next to my other side which I can rest a hand on whilst walking if I need. No drama to date!
Mine programmes time, distances, calories, speed, is quiet and operated by a remote. It's used a lot, and although a very different experience compared with the treadmill I had in a big old house with lots of space, it's perfect for our needs.......and just works.