To me, sideloading on BB10 isn't that bad. There is a thread on crackberry forum keeping track of the working bar files for Android apps. Just install DDPB or Chrome extension and you are ready to go.

I have sideloaded a few apps and found ACL to be valuabe. I even feel that I might get a Jolla phone if ACL on Jolla supports decent amount of big name apps.

However, I hope Jolla's ACL has a better interface and gesture than BB10's. Sometimes the back gesture triggers a peek instead of going back....