I have this Leather strop (//). Made to me by a friend - the raw side off the leather exposed. Next step is to apply some oil and then I have to decide if diamondspray or diamondpaste is most optimal. Could anyone tell ?
It really depends...
... on the kind of knife/steel you want to hone and from where you want to start.
Some also prefer a very last step on a dry strop with no paste or compound at all.
Thus I think there is no general 'most optimal' recoomendation.
For occasionally touching a blade I'd go with some fine diamond spray, because pastes usually require cleaning the blade afterwards.
Sounds reasonable to me with the spray - Thank You :)