So... I have a BMW F800S as a courtesy bike from the garage that takes care of my bike.
Verdict: It's very light and thus, nimble. And that's the only positive thing I have to say about it. Maybe because I can't really ride it comfortably because it's too small for me, so I can't even use the lightness in any meaningful way. The engine is totally unsofisticated, really frustrating. The sound is shit. And because of the limited steer angle, shunting it around is annoying.