Question about Signatures on Samsung Gear VR

Hey guys:
https://developer3.oculus.com/documentation/publish/latest/concepts/publish-mobile-app-signing/

According to that, the two types seem independent.
My question is: Can i use the Android Application Signing method for a Gear VR application without releasing it on the store? I plan to make a private application, with several hundred users, but do not want to place it on the store. Is this type of deployment possible?

Thanks!

The APK must have every device ID added, or the app must be delivered via Occlus Store . Fail. You can use a tool like this to distribute:

https://www.constructvr.io