I have subscribed to GS sixgun's Rule that taping the spine is a good Idea. I have done this for about two months and it sure made life easier. ONly one thing to add is replacing the tape is imperative. I always do after using a diamond stone but it is really important when finishing the edge. If you don't the finisher never gets to the cutting edge. He says this in his videos but It never soaked in that it is always important.
Stingray