This is true as long as you're using oil and the contact pressures are high enough to continue releasing fresh abrasive. If it's not then the stone will eventually glaze and start burnishing the edge. When that happens you must lap the surface and finish appropriate to the relative grit using SiC. You could use a Crystolon to resurface it but eventually that will wear smooth and you'll have to condition it as well.
Many people don't do this at all because they don't know it needs to be done. I know you can also use the NL-8 and NL-10 from Nano Hone but I know they are crazy expensive for most people. A stone that you could get which would approximate the India but less strong of a bond would be the SIgma 400, though it's less coarse I'd still expect it to work well enough.
Naniwa Traditional is hard to argue with for the money, especially the pink one...
Naniwa 220 Grit Pink Alumina Traditional Waterstone