I've been getting something similar myself the last couple of weeks and its gradually getting worse.
When starting from cold it stutters for a few seconds, I even need to give it a bit of throttle now before the choke kicks in and it idles at 1200 rpm. Is this what you're getting?
As the car runs fine afterwards I was also thinking it wasn't a coilpack but not sure what it is. It's almost like the choke is late kicking in but not sure how that applies to a modern ECU controlled car.
I'll probably get JKM to look at it when my car goes in for the diff to be fitted but would be good to get a heads up on this.