RL Clan with Switch and Ps4 players?

A buddy of mine wants to buy Rocket League for his switch. I have Rocket League for Ps4 and we both wanted to be in a clan together.

I know that you can't join Pc, Xbox, and Playstation in the same clan. But what about the switch, Ps4 players and switch players in the same clan?

I could find the following:

Do Clubs support cross-platform play?

Clubs support cross-platform membership, but you will not be able to invite cross-platform players until the RocketID system is released later this year.

This is a bit older, but from the official Rocket League site, which means you can actually join a club as a PC and PS4 player.

Remember that you have to be in a party for that!