Yes, you're right.
For two separate gateways that's a valid statement, but I need to know how it (will) work for this multigateway feature when I'll connect rs485 and nrf to one physical GW.

Hi, I have a question about signing/encryption.
I have rs485 nodes without these features (as they are not really useful here), but I want to add nrf nodes, where I would like to implement these to have a secure network.
So can I use rs485 nodes without signing/encryption and nrf nodes with them enabled at the same time, using this multi gateway or do I have to enable signing/encryption also on rs485 nodes in this case?

I think, I started with version 2.1.1. and it works always the same. I'm on 2.3.2 currently and my GW is RPI3 with NRF24 radio attached (before it was NodeMCU v3).
When there is no direct connection to the GW, then node is just inactive.

The same story at my end.
When node is in repeater range only, it's not working. It works only when it has gateway in its range.
So simply I don't know what for there is a repeater feature...
The same radios on my side.