I've curious to test ride one to experience the torque power without the gearing. Though I'm probably not going to consider one as my primary bike for a while. They would be a great around town bike, but I'd be concerned about the range issues currently. I'm hoping to see some interoperability with the quick chargers along the highways like the Tesla Superchargers.
One of the vendors of them did make the battery pack easy to remove from the bike, with the idea that apartment dwellers could carry the pack inside to charge overnight.
It has been good to see more electric bikes showing up in various races including the Pikes Peak Hill Climb.
I would like the lack of vibration and noise compared to an IC bike but yes, range anxiety is still an issue.