I live in a hilly area, short to medium steep hills. I have no problems riding around on errands in my local town. If I had to ride further like to the next town I'd ride a geared bike. That's not to say it can't be done on the Mu Uno but you'll have a good work out with the one gear. I wouldn't hesitate to ride the bike on flat terrain or in conjunction with public transportation.

If you're going longer distances without the use of a bus or train or ride in hilly terrain, by all means get a multi geared folder. Your legs will thank you.