We have two port channel uplinks per FI. One goes to our ACI network and one goes to our Legacy network.
Before ACI came along, we were just using VLANs (not VLAN groups) and no vlans were assigned to the port channel. Since we only up-linked to one network at the time it worked fine, and continues to work fine, except that now when we go to add a legacy vlan to a legacy vNIC we're getting errors: