I kind of doubt it did work well for them. Microsoft was having an identity crisis at that time where they didn't yet realize nobody wanted their tablet UI on desktop.
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.
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.