In fairness, most people I knew with Windows phones worked for MSFT.
But a few (the ones I talked to the most) were just people interested in the Windows ecosystem. One was running Windows Home Server. Those folks all swore that everything was great (except the app ecosystem). I can only go by what I was told.
If they allowed straight Win32 ports on ARM it could have been interesting. Or if they did it now, where I think x86 emulation on arm is working well these days.