Actually ORD was pretty tolerant of this corporate guy doing exactly that, as we weren't real familiar with their ops. (We'd be in and out of KMDW and KPWK daily, but KORD was typically only used when we had customers coming in internationally and we'd take them to their final destination.) Following the Inner (or whatever they call it) on the chart doesn't look too bad, but when you're sitting low in a Learjet with acres of tarmac (sic), hundreds of taxi signage, and lots of heavy aluminum/composite movements all around, I'll gladly take the "Rookie" sign around my neck and the extra set of eyes. Didn't care what they were saying under their breath.