Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - General Can I play early access co-op?

I have a silly question that you guys might be able to answer. With the amount I backed, I will receive two copies of D:OS 2. One of these copies is for a friend.
If we backed together, is it impossible to get two versions of early access? Or can I send him his key so we can play together on the early access?

Thanks a ton