Honestly ???

I use the most pure CrOx I can get my hands on, then use it on a Leather strop, BUT I don't use paste to "Refresh" or to "Sharpen" I only use it for 7-10 laps depending on the CrOx micron size right after most hones to add smoothness to the edge before regular stropping...

If I wanted to use it to refresh I would get the .50 Diamond and use it on felt, I did an experiment with the .50 and the .25 diamond a few years ago with a very good outcome...

It really depends on what you are after