I think I could walk into any music shop anywhere and with a guitar off the rack, a couple of basic pedals and an amp I could sound just like me. There's no devices, customized or otherwise, that give me my sound.
I don't even think whether I play the blues or not, I just play whatever feels right at the moment. I also will use any gadget or device that I find that helps me achieve the sort of sound on the guitar that I want to get.
If people would like to come to my concerts I'd love them to come. And if they like the music that I make, I love that too. But I do not make music for other people. I make it to please myself.
I don't have a very disciplined approach to practicing or anything, but I do tend to have a guitar around most of the time, which I strum on most of the day.
Usually, in the studio, on this sort of thing... you just go out and have a play over it, and see what comes, and it's usually - mostly - the first take that's the best one, and you find yourself repeating yourself thereafter.
I just play intuitively and work the same way in the studio. I don't have any magical effects or anything that helps me to get my particular sound.