The best source of information at this time seems to be Youtube videos showing how people download apps from various app stores. One said that it was quite disa

The best source of information at this time seems to be Youtube videos showing how people download apps from various app stores. One said that it was quite disappointing, that apps were crashing. The one he displayed shut down due to missing Google Play Services. I think this will be the main problem, as Google puts more and more effort in these APIs and less in the general Android ones.