Hi. I did the last 109km of the VDLP last fall and couldn't find any guides on it. Since I'm a journalist, and the Camino stole my heart, I'm returning next month and will be creating a mobile app on the entire route. (The lightest guidebook of all!) The first release will be on the Sevilla to Merida leg, and I'll return several times in 2011 to do the remainder. If there's any particular type of info you feel is indispensable in a guide -- e.g., the presence of ATMs or Internet access in towns, if the locals tend to speak English or not -- let me know!
Melanie