Ive wondered about the ceramic line too, but I figure there's a reason that there aren't many people using them for straights. I can't recall the name of it, but there was another ceramic hone that folks were testing out here, and they found it to be too uncomfortable to shave off of.

As far as lapping, I would advise against it with any ceramic hone. Deferring to experience with ceramic barber hones, they're very difficult to lap because ceramic is hard, and they may well be getting whatever their grit result is by using coarse cutting material that is just barely poking up over the binder and very finely burnished. You just might end up wrecking the stone's performance by lapping it, and getting it back to factory performance can be quite an ordeal.

My advice, barring a member that uses ceramics saying otherwise, is go with the glass/pro hones, or the Norton/Naniwa line as those are known good hones for our purposes.

If you get a lapping stone, as opposed to a diamond plate, be aware that the lapping stone will also wear, and is liable to go out of flat. A diamond plate doesn't. They may slow down, but will always be flat.