This thread had me seriously considering the Milwaukee 10 piece set (because on eBay it's close to the price of the 3 piece set), even though the only driver in that set that I was really pining for was the ECX tip (I've already got everything else I need from Wera).
Well today, I was talking to a telecom installer (they're always working around live low-voltage, but potentially high current stuff on large battery banks) who happened to be at my office, and I saw he had some of the Milwaukee insulated drivers, so I asked what he thought of them. He said he had the 3 piece set, and the Philips was not only excellent, but possibly his most used tool, and he showed off how the white lettering on the top was almost worn off from palm contact (something impressive, since these screwdrivers are nice enough to provide a recessed area to protect the writing, unlike my German ones that wore off in no time at all).
His impression was that the insulation on the Milwaukee held up much better than his previous insulated screwdrivers, and that he couldn't be happier with them.
That's when I mentioned that I was looking at the set because they offered an ECX tip, and I described it. At that, he pulled out the never-yet-put-into-a-screw ECX driver from his tool bag and gifted it to me. It seems that he never ran into that type of screw, and he was happy to reduce the weight on his shoulder.
I was glad I could repay him later with a stubby Philips that he happened to need.
Anyway, now that that I have one in my hands (and not just browsing through the plastic packaging), my personal impressions are that the Milwaukee drivers are definitively the real deal. The insulation is tough, and not overly thick. Certainly not dipped on rubber that I'd be afraid of, and I feel that the VDE marking on it is well earned, even if they're made in China. The tip has a sparkly texture that appears to be there to improve grip. In the online pictures, the yellow band at the tip of the insulation appears to be a little thinner. It is not. It has to be cast in a slightly thickened band at the end, to end up mating smoothly with the red. A nice touch IMHO. The rubber grip on the handle is quite comfortable, and if you're used to that shape from Klein drivers, you'll like it a lot. I also liked the nice touch of two small flats that keep it from rolling, and the lanyard hole. All in all, a well designed tool, with no obvious flaws to my eyes.