[speedkills]

I'm not a fan. If I get a new hub, the last thing I want to do is unscrew every light switch to find the picture on it to scan and if I buy a house with pre-existing hardware I don't want to rely on the last owner having taken pictures associated with every switch and left it for me.

[Avamander]

OOB pairing could have rolling keys, but that's more expensive. In general the problem is difficult, every solution has a nasty caveat, be it taking over during installation or what your described.