Recently Jens Larsen (the guitarist and main composer of Traeben) started to write about his practices for improvising. As he mentions in one of his lessons, I also had a talk with him about the fact that there are hundreds of books with exersizes, hundreds of DVD’s about specific styles, but almost no information about how to put the stuff you practice into your playing. How do you do that, what do you do with an exercise on stage?
Among other things Jens talks about that, trying to explain how he does that (which is not only interesting for guitarists). Of course some stuff is really guitar-only, but I do think he speaks about a lot of interesting matter. Check it out, and read it on his website.