[android-porting] Android 64-bit only system limitations

[satur9nine]

I read about the LOCAL_MULTILIB := 64 option
at https://source.android.com/setup/64-bit-builds

Am correct in guessing that producing a system that has only 64-bit
binaries on it will only disable the ability to run 32-bit native code? In
practice does this mean only the following would not run on an Android
system that was built with LOCAL_MULTILIB := 64:

* native pre-installed 32-bit binaries
* Android NDK apps built without 64-bit binaries

Is that it or are there more possible complications?

Thanks,
Jacob