Personally - still staying well away from it. Spent too much time fixing up issues when it first came out and cant see the point / benefit for a business.
Clients - finding that Microsoft Edge doesn't work well. It fails with lots of sites such as log me in remote. Has a situation yesterday where it wouldn't even download and run the Logmein client either - had to change browser, download by hand
Clients not liking the new Start Menu
For us - still a big NO!!
Others?