I can predict that such a motorcycle will never have much of a market. Here's why.
Bikers such as myself appreciate the engine noise their bikes make. It's a marvelous thing. While I personally dislike the noise Harley engines make—they're too damned loud—I like the healthy, high octane growl the 1.2 liter engine I sit just above and behind makes. Then there are the vibrations from the engine. At 90 mph, the engine spins at about 5500 rpm. It's an incredible feeling to sense all that power at my command being exerted.
As you can expect, none of these things are present in an electric bike. It's going to be quite a dull experience to ride an electric bike I think.