Eh, it's probably not going to happen unless either:
- fusee/sept stay the same, or
- You downgrade to a lower, pre-7.0.0 firmware
The issue is with sept itself, it needs to be signed with the proper keys in order to work. Release builds will have it pre-encrypted so this effectively makes it a non-BYOK solution for regular users, however if you compile it yourself you're still going to need the keys to properly sign and run it on your Switch.
That said, fusee doesn't get changed that many times (and I think sept won't get either) so you
should be able to compile and test a few yourself in the future but again, only time will tell.