Demo for Civil Defense with Winlink

I set up my Flex 6600M at the Maui County emergency operations center to demonstrate its capabilities during the Hawaii Simulated Emergency Test.  I was able to monitor SSB on three bands simultaneously (80, 60 and 40m) and support a Winlink peer-to-peer mailbox.  I had the Winlink system connected to slice A and whenever someone tried to link it stole the Tx from any of the other slices which interrupted any conversations I was having at the time, but it was great to be able to support calls on multiple bands, support digital message handling and monitor activity from other islands on nearby frequencies all on one radio.  We were able to demonstrate Winlink p2p which allows other hams to leave messages for, or receive any messages left for them by Civil Defense, even if an operator is not at the radio.  I hope we convinced them to buy a new radio.  Has anyone tried to run multiple instances of Winlink to support more than one band?  73 and Aloha, Tom, NH6Y