Don't let it out of your sight in public.
They are "interesting" to ride, although you acclimatise after a few miles. The M-type is the weirdest because the bars are quite high, you sit a long way back and there is very little weight on the front wheel. Be wary of cornering hard on surfaces like wet tactile paving, as the front wheel can suddenly decide to let go. Generally, the taller you are, the better the riding position is. If you are over about 5'8" you really need the extended seatpost; the standard one gives the smallest folded size but is too small for most men, unless they want to risk knee damage.
They are much improved with SPDs. The ideal tyres, for town use, are Marathon Plus because changing a rear puncture out on the road, in the rain and dark, is not something you want to contemplate. If you don't like the plastic shifter (which works fine, it's just a bit nasty) you can replace it with any Sturmey-Archer 3-speed trigger made since about 1936. Unless it's marked "ASC", and if it is, you're rich.