I've read this bit from an online retailer a few times, and always wanted to ask what the SRP Escher owners think. (I am not one.)

Can I use it as a final hone after using the Belgian garnet stone?

We are often asked this question. If you have used a high quality natural Belgian stone, the Escher/Thuringian stone is NOT recommended as a final hone, because the edge profiles created by these stones are different and not complementary. A high quality Belgian stone (such as the ones we sell) produces an edge without burrs, therefore that edge is already drawn toward attaining an ideal finish, so you wouldn't gain any advantage by using the Escher.

However, if you happen to own a low-quality Belgian stone (more aptly: a stone containing fewer garnets of large size, therefore cutting a coarser edge profile), there can be some improvement with the use of the Escher.
Thanx,
Me