by commenting out some lines, I transformed the above mentioned shade-c terrain shaders to work with standard pssm and other shaders without any shade-c stuff (only a simple material setting and one fx file required). not surprisingly, it is faster than our lovely terraintex.fx Probably I'll put it into my editor to be easily manageable, and later will also make a small example project as a contribution.
entity skins: 1 base texture + base normal-map + (1 or) 2 rgba blendmaps + (optional) lightmap
material skins: 2x4 tiled textures (using 1x4 is a bit faster). they are not quad textures like in shade-c, the 4 textures are merged as a row, that can be easily done by Gimp (make a film without borders).