I actually just tried skimming the crema the other day during a training sesh. The mouthfeel did not appeal to me. I also felt like I was missing out on major flavor components. The experience was overall totally weird. These were just my initial responses to a one-time trial - I'll definitely keep experimenting, since this is such an intriguing idea to me.
I'm into stirring spro, for sure, although I still love just pulling and slamming it. I love the idea of experiencing espresso in different ways: stirred, unstirred, sans crema, stirred + sans crema. These methods all create such uniquely different sensual journeys. Exciting stuff!