In reply to gethin_allen: to be fair, the wheel does stop, but on with a moderate turn of speed it will not stop me, and if I pedal with brake fully on i can still make forward progress,,,,,slowly,,,,
Lever is as firm as you would like, and does not touch the bars or even come close,
I also have with the help of a friend gripped the lever as tight as possible and still been able the rotate the wheel by hand, with effort,