Well I like it, its fast.
Looking at the network config, it looks like each ethernet port is its own ethernet port i.e eth0, eth1, and the WAN I think is eth2.
So VLANs,
On my BERYL I had the normal LAN on VLAN 16, and a second VLAN 17. My WAN port tagged both 16 and 17 to feed into my VSphere box.
I need to replicate this.
I am guessing I do the following in LuCI:
Create VLAN 16 under eth2 (WAN port) and bridge this to the BR-LAN.
Create VLAN 17 under eth2.
Add a new Interface containing eth2, so I can use the Slate to route on a stick.