I also have the 4" DC4 version of this stone. I think your description is right on. I have found it a very handy stone. The ceramic side has a bit of a "sawn" pattern in it that at first I thought odd, but it seems to work quite well.

Worth the coin I think.

Mears nails it down on a log to use...I found that a bit amusing. I use the sticky mesh stuff to keep it in place on a flat surface, that or bringing the stone to the blade works for me.