I am using just rubber strap to mount on to the handlebars, so far no problems and avoid having a permanent mount.
I find the light on the helmet okay, I been riding chicksands bike park with it so don’t really notice it if you know what I mean, might be different if you were doing a trail ride.
Back from a night ride around the local bike park using this setup. I bought both the 1600 and the 1000 lumens for a helmet light this weekend as both were discounted at Halfords. I found using the supplied rubber band and rubber foot fine for the handlebars, and combined with the helmet light...