I agree with the mean commercial bit.. If it's about selling and return on investment. ( be it your time or materials used) then the quickest finish is friction polish.
But what some don't realise is polishing the wood rather than putting polish on the wood..
The time spent finishing pens with CA or acrylic isn't worth while.
I have also said on many ocaisions that with The hard finishes for the end user doesn't get the feel of the wooden pen. Which is what wooden pens are all about isn't it?