If I may suggest, hang the battery pack for the DiNotte from the stem instead of the top tube. It will, at minimum, scuff the paint. Stems are cheap and easy to replace by comparison to having a frame repainted.

My NiteRider battery pack has worn through the paint in about six months of riding. I doesn't matter as much on my alu hybrid, but I'd be heartbroken were it to happen on a Waterford. I've ordered a DiNotte for my road bike, and, having learned my lesson on the hybrid, its battery pack will be riding the stem.