Russ,
No you shouldn't expect to see the WWNs of the SPFs/Ports, you will see the WWNs of the hosts though if/when they're powered up.
Just plug in the extra FC cables between the UCS FI's and Brocade switch, enable them on either side and you'll be set to go. Just make sure on the brocade side the new ports have the same config as the existing ports. That's all you should need to do!
On the UCS side as you spin up new vHBAs within service profiles or re-ack existing servers, the system will start to utilize the additional uplinks accordingly. Keep in mind, existing vHBAs that are in use will continue to use the same existing FC uplinks. They do not change uplinks dynamically by themselves (unless there's a failure). If you want to force the new FC uplinks to be used you'll need to re-ack the blades like I said.
Regards,
Robert