I've had tires mounted in four different shops. and each time they came back with milky-white residue on the sides. So, they are using some lube, even with tire machines. Anyway, I found Anakees to be slippery for a while, MT90 the same, and my new set of TKC80 was really slick the first few miles.
I usually take it easy (speed limit) for the first 50 miles, then ride as usual. Haven't gone down because of tires yet. Gone down for different reasons, but not tires.