From the perspective of someone who lives near a main road. The silence of these motor bikes is a plus as well as they don't contribute to air pollution. You will of course always have careless drivers who don't look out for motor cyclists.
The Brammo are motor bike replacements, as fast and capable as normal motor cylces. They should never be used on pavements
Johnny, The silence of these bikes though environment friendly, might not be a good thing. Road users need to have a feel of what is around them and the silence of these bikes can be dangerous. My opinion is for riders of these bikes to pass a test before they are allowed on the road. Sinkee roads are not designed for such bikes and there's a lot of inconsiderate drivers/riders out there. Waiting for more fatal accidents to happen.
Here's a pic of the electric bike shops I mentioned earlier.
<a href="http://s1144.photobucket.com/albums/o497/chonburifc/?action=view&current=F89D7C70-31A8-432B-8478-3AE8B9E1175A-2442-00000260985BECC3.jpg" target="_blank"><img src="http://i1144.photobucket.com/albums/o497/chonburifc/F89D7C70-31A8-432B-8478-3AE8B9E1175A-2442-00000260985BECC3.jpg" border="0" alt="Uploaded from the Photobucket iPhone App"></a>
another one:
<a href="http://s1144.photobucket.com/albums/o497/chonburifc/?action=view&current=0C1442D8-A84D-4BAA-B61A-02449F1B7C40-2442-00000260A600E2CA.jpg" target="_blank"><img src="http://i1144.photobucket.com/albums/o497/chonburifc/0C1442D8-A84D-4BAA-B61A-02449F1B7C40-2442-00000260A600E2CA.jpg" border="0" alt="Uploaded from the Photobucket iPhone App"></a>
I still prefer a benzine powered motorcycle over these electric bikes. At least I know I am covered under insurance.
Edited this. Paiseh. the mobile stall blocked the front of the shop of second pic but can see the signboard.