Ugh, I'm skeptical of giving Apple ownership of any kind of developer tool. We all saw how badly they screwed up TestFlight, and now you want to give them the only OSS package manager?
Amen to that. Fortunately the Swift Package manager (Which is also OSS) is ran by their open source swift team who so far is doing a great job of being open and delivering the best solutions for the job.
Haven't tried HockeyApp. I use Crashlytics Beta now and it's amazing. Literally "press of a button" deployment: no dealing with provisioning profiles, device UUIDs, or any of that garbage. Just build and deploy, and all your testers get the update instantly!
