Dri-Dek tiles for substrate?

[DLLNP]

Has anyone ever used Dri-Dek rubber tiles for substrate? I read somewhere that it can be used with a layer of newspaper underneath. Seems very easy to clean i.e just a matter of pulling out the dirty tile or two and rising them off. Plus it claims to kill germs, mold and mildew...

Dri-Dek | The Product (http://www.dri-dek.com/dri-dek.html)

Would the little ridges on the tile eventually irritate the snake?