I began mixing digital and 'real' quite a few years back when I was primarily moving to print making. I'd make my drawings and inking scans so I could digitally make a transperancy to then burn a screen for screen printing. In so doing I began to work more digitally and really love it. Whenever I sketch now I usually assume it'll end up scanned and into the computer, then I can take it anywhere and add to it as much as I like.