The EM 5.7 has many similarities to a Sherco, but the electric system is amazing. No shifting, a "clutch-like" switch, and a power setting switch for selecting various throttle response curves. The Novice mode is very tame and suitable for someone who has never ridden before, the Trek mode is good for average trail (loop) riding if there are no major hills/steps to deal with, the Trials mode also uses a thumb switch near the throttle to select two different curves: one for full-power, quick response and the other for about 95% power and smoother response. The latter mode is good for loose terrain and/or muddy, slippery sections.
It definitely feels like a regular Trials bike when ridden. I've had a couple of expert riders put it through it's paces and it performed well. It sounds basically like a petrol bikes does when coasting downhill with the engine off. Chain noise predominates and the motor has a quiet, pleasing sound. However, when going downhill, the motor does produce an odd whining sound, but still very quiet. It also has a button on the left that engages re-generative braking. It feels somewhat like the compression release on a two-stroke does when engaged on a downhill. The energy from the motor is fed-back into the battery and slows you down at the same time.
I'm still trying to figure out how to use the "clutch". It basically shuts the motor off when pulled, but when released, it will instantly accelerate to whatever the throttle was set to. This is challenging since there is nothing moving, nor any sound, while advancing the throttle when the clutch is pulled. As a result, I have to guess where the throttle is set, then release the clutch for an immediate surprise. I'm sure with time, I'll be able to get the correct feel for setting the throttle.
On steep hills, it just climbs, and climbs and climbs. Just add more throttle.
So far, after a full day of riding, the most I've used was only 40% of the battery capacity. In 45-60 minutes, the battery can be fully charged from that point. It takes at least a couple of hours to fully charge the battery if it's nearly depleted.
Plus, I can ride it in our yard and the next-door neighbor doesn't even notice!