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Some people do that too, and some of the newer barber manuals mention soap lather. I think I've seen it in instructions for newer barber hones too.

In my opinion no; especially after the bevel is set.
If anything, until you have a good feel for torque, use tape for any heavy grinding work, and then take it off to finalize the bevel set and...

In the old old barber manuals, what they called lather is what we refer to as slurry.

I hardly ever use tape.
Only to protect etching or other decoration on the razor.

I don't care for the feedback difference with tape.