My PSUs have shipped, but the miners have not shipped yet. Also, when I was ordering, the details were showing that the choice of shipper with FEDEX could be delayed up to 2 weeks.
Same here which is why i opted for UPS instead of FedEx
My read of that warning (and I could be wrong) was that there could be a delay if there was a customs problem, not that there would be a definite delay with FedEx.
It wasn't clear to me why other carriers would be any better, so I went with FedEx. As a corporate shipper and a receiver, I found them to be an extremely reliable carrier.
That said, the point is kind of moot because no orders of the S7 have actually really shipped yet. They've all been PSUs by the look of them. If there is a delay it's on the Bitmain side at this point.