Yep, found this out the hard way and almost killed myself. Not clamoring for prohibition though. Also would never climb on one again. My remaining balance on Lime will be forever unused. Best part was the notification asking me to rate my ride which I received as I was regaining consciousness. :)
Wish there was a way to get notified of replies on HN.
Anyway if you happen to see this I was not wearing a helmet, on flat ground. Not proud to say but I was on sidewalk and the rear wheel slipped off the side into soft ground bringing the entire apparatus to a quick halt from prob 15mph. Woke up a few min later with my face on the sidewalk and my legs curled up beneath me. Luckily I was wearing a thick stocking cap which prevented me from more serious injury. Total damage was bruised brow ridge and lip/chin, missing chunk of leg flesh apparently from hitting the handlebars, broken hand, and broken ribs.