I did not know about that expo, I was just searching the net for MOC mecha.. and on the search results page, a thumbnail of your work (blue mecha in particular)caught my attention. It reminded me of my favourite mecha game Front Mission 3 and one of the Wanzers. But of course upon closer inspection it turned out to be very different (still amazing though, reminds me of an gorilla, but reversed!)
Few days later, a colleague showed me a link that had your mecha on it again... so your work, not so much the expo, left a lasting impression. Thanks for sharing.