Proxmox ARM support - X86 Virtualization Layer.

Hi everyone, I had a few questions. I went to SCALE (So-Cal Linux Expo) and met with Ampere Engineers and had a good conversation. After the conversation had me thinking about using ARM instead of our x86 based CPU's. I know unofficially there is ARM64 support but I wanted to know:

1) Has anyone used the unofficial arm64 Proxmox in production

2) If using ARM64 is there a virtualization level to support x86 CPU's? If not what has been the use cases of ARM64 on Proxmox.

Thanks