A very interesting variation. But the x does not work, looks too much like a small capital N . Maybe you could make amix between the s and the z to make the x...

OR MAYBE NOT, the more I look at your x, the more I see it, reminds me antique greek ornament. Keep it, eventually make an alternate, more like a small capital H for example, i think it would fit.
Definitely a good addition to my (long) Crouwel New Alphabet derived fonts

nice!!!

nice!!!