So far, this has been fantastic. Our team has been seriously considering converting from Windows to Linux for embedded development. (we run Linux VM when needed) Up and running and cross compiling for ARM without issue. Really surprised how it has just worked so far. This came at a great time for us.
So far it's been very bad for us. The always-on telemetry in Win10 draws a big question mark if we can depend on Windows in future. While Windows 7 is great and around until at least 2020, an expensive move to Linux, FreeBSD or Android seems like the better option.
If you are trying to escape telemetry Linux or FreeBSD make sense, but not Android. Between the Android OS and the apps, Android collects much more data on you than Windows 10.
When you install Windows 10 there are several pages of checkboxes where you can disable this telemetry. Of course we can never be sure that it is actually disabled.