when I'm out of office for installations here and there, I normally use ControlSpace Designer on a PC with Windows 10. I'm using it since Windows 10 became available to download months ago, and I upgraded from Windows 7. To be honest, I have not encountered any particular issue using it in the typical CS systems I normally work on.
David - that's pretty much where we are - we have done some preliminary testing with Windows 10 and have not encountered any issues - we have also not heard of any Windows 10 related issues from the field - but we haven't yet completed an exhaustive test with it..
In short - we think it's OK, but haven't tested thoroughly enough to confirm it..