Dynamo Lights

Thanks for this by the way, I had seen that one but it was out of stock everywhere.

I like handlebar mounting because it gives you the option of using a front roll when bikepacking and it's easy to remove. I found a couple of other options, coincidentally both on Wiggle:

Exposure "e-bike handlebar bracket" - okay but doesn't give you much adjustability due to the triangular shape of the mount

Lezyne e-bike centre forward mount - also okay but not super robust.

B&M alu is probably the most likely to survive a bashing I suppose.