Eurogamer:
http://www.eurogamer.net/articles/2016-07-07-pokemon-go-users-deleting-app-after-ban-rumour-begins
"For what it's worth, one
Reddit user claimed to have had a bad experience with Pokémon GO developer Niantic after they were banned from the studio's previous game Ingress for doing something similar:"
Oh, something similar to sideloading? WHat is it? tell me
"Niantic used to ban people for drift hacking, and it would be a shame to find many new trainers suddenly being banned. The process to get unbanned is long and arduous, and it's not worth it."
O_O
sorry, but... What? That doesn't have anything to do with sideloading. That's a blatant cheating.
===============
Eurogamer:
http://www.eurogamer.net/articles/2016-07-06-how-to-get-pokemon-go-now-even-in-the-uk
"Visit the
APK file link here from your Android and hit download - you may be asked about installing files not from your app store, but this is fine."
That is... really unresponsible!