Simple question: After taping the spine and highlighting the bevel with magic marker, on what surface should I make the 1-2 passes, in order to reveal if/where the bevel needs work?

My reasoning tells me to use the highest-grit finishing stone in my arsenal (a lapped Spyderco UF), rather than a 1|2|4|8K surface.

I could be wrong (I was wrong once before).