NAV 2015 with Azure SQL ?

Has anyone managed to get NAV 2015 working with Azure SQL?
It would be helpful even just to know that someone managed.

I'm asking because Azure SQL does not support Windows Logins, and in NAV 2015 we can only specify a Login Account (which must have a domain).
Things changed in NAV 2016, since we could then specify both a Login Account, and Database Credentials

Thanks
Alastair