I have one just for that purpose that I leave in my den. A little 4x2. Works just fine!!

Like onimaru55 states, "know your rock." But then you kind of got to know the blade too. I'll say this, I don't do that many strokes, but I do start with a very light slurry.

It's fun messing around with it - and when you use it for just touch-ups before a shave, you'll discover quickly enough what works and what doesn't. I have a barbers hone in the den too. It's fun as well. : )

Now if Naniwa made a little 12K 4x2, I would be in heaven lol!!