Sketchbook ink drawings

One of my New Years Resolutions I've made was to keep a ink only sketchbook. I'm a little envious of artist like James Jean and John Hendrix who keep tightly drawn sketch books that mirror or act as investigational studies before their finished personal or client work begins for the day. My sketchbooks work more like warm ups/loosen up or me trying to graphically translate people or things in a limited number of lines than showing real draftsman skill. Anyway, heres some of the better pages over the last month. Most of these were drawn on the subway, but a few are on location somewhere. Gotta love 4"x6" moleskines!