@minnnt the Peak Design Leash looks very interesting. I like the quick release for the straps and the fact it can also act as a stabiliser for video. There were a few people worrying about the anchor links giving way but I doubt they'd release something that could damage expensive gear without proper testing.
@snerkler thanks for pointing out the Black Rapid FastenR-T1. I use
this plate and adapter. Would the Black Rapid FastenR-T1 be ok for this if I wanted to get a BlackRapid strap?
I think I will keep my options to the above 2 and Optech. Which one I am not sure about!