Thanks everyone for their replies and solutions.
I'm kinda like a vegan, not a very good one, I don't have a strong moral complex so can and do bend my will and buy real leather goods occasionally, but where possible I tend to try and find something that isn't made of leather (such as wallets etc). I'm aware such thinking is flawed, the carbon issue may be worse for seeking a 'non animal' product, but I dunno, Bruceywucy maybe feel a 'ittle ickywick with a leather strap over the back of his hand lol.
I also see that many of the solutions seem to involve anchoring onto a bottom plate (perhaps arca swiss compatible). I dunno how I feel about that because what then when I want to do portrait landscape work? I need my L Plate on and that means removing the bottom plate of the hand strap, is it then dangling from being attached to the metal loop up top?
I don't like having my L Plate on indefinitely (it's a cheap generic one, I might feel different if I had a better, lighter, slimmer or better fitting one), as mentioned earlier my K-1 fits into my Cosyspeed Camslinger belt thing ok, but only with the plates off (the KP however does). So for me it's all about versatility, I quite like a camera that can have straps that are easy to take on and off and don't rely too heavily on bottom plates. I think that's why I quite like the fingerstrap thing...
As per usual Bruce is fussy, but it's nice to see and hear what everyone is using