Aloha!
I have never treated linen nor leather with pastes or lead or other metals or compounds.
To me, a strop is for alignment, not a continuation of honing. I only strop 10 passes on bare leather before a shave to assure the blade is in alignment. I never have added paste, rouge, or lead to leather or linen. Bare linen I only do after shaving (20 laps) followed by 10 laps on leather to aid in drying the blade and bring it back into alignment for storage. That's it.
But I respect the philosophy and methodology of others that do add compounds to their strop. If it works for you, then go for it!
-Zip