I'm using the same mehod of terrain textureing as the game Battlefield 1942 with an huge texure for main terrain alterations like sand, pavement etc and a smaller texture that's applied to every triangle to give more detail.

Edit:

I have seen the demo you sent before and it's quite slow actually, the method i'm using is mutch faster and can give quite good results.

My terrain lacks hovever any optimations such as ROAM or CLOD, but im reading about it, i might be able to do it some day