I substitued all stones and their lube,for diamond stones,quite a while ago. I do not miss them and find the diamonds far superior.
Just for [bleep] and giggles,try this tip a pard showed me at work one day. Go to your rig and roll down the window half way,or better. Use the top edge of the glass,as you would your favorite stone. In a coupla licks,you'll have a razor edge.
I could not believe my eyes,when he demonstrated it. The long surface of the glass,puts a rapid hone on even a stubborn edge and it is nice to have such a device always "in" the rig. I've misplaced more than one sharpening device,but have yet to lose a rig(grin).
As per usual,your mileage may vary but that is food for thought.................