The attacked person wasn't "bright bimbler" who used to be on this forum is it? Real name Ria something or other. She was well known for frequent claims about having been sexually or physically assaulted in races whenever she was overtaken or felt a bit tired. Or threatening suicide to "teach a lesson" to anybody whose view differed from hers slightly on a forum. If it wasn't her then carry on. If it was, then you have supreme justification for being annoyed!
Garmins etc are all moving to optical wrist mounted HRMs, so why do dive computers still use those uncomfortable, Victorian era chest straps? It's really annoying being forced to put the strap underneath your wetsuit every time you want go diving