I am absolutely fine with using it as just a BT speaker, however I can't even do that because it won't let me connect it to anything without setting it up through Cortana first, and Cortana setup won't work on three devices (W10, iPhone, iPad) because... well, it's Microsoft.
Basically, with the sole exception of Xbox, anything that is consumer oriented and MS branded is guaranteed to be killed off after a short while. Only a fool would invest into MS ecosystem at this point, outside of Windows / Office. What a disaster.
Time to pack that nice Invoke and dump it into trash.