I've had luck lapping a few, but you need to ensure you restore a fine finish. Almost like burnishing some of the really hard natural stones. I have no idea if this is true of all barber hones. There are way to many types and compositions and to much knowledge has been lost to history.

IMO, if you are going to do it, lap it up to 2000 or 3000 grit and "rehydrate" the binding with a long soak in a petroleum solution. When ever I do this I slather mine in vaseline, warp it in a paper towel and let it sit for a month or two.

Best of luck and let us know how it turns out!

Matt