I normally don't cover most cons away from the East Coast, but I have it on good authority that there will be gnomes at Enfilade! 2014, May 23-25, 2014 (Memorial Day weekend) at the Red Lion Hotel Olympia in Olympia, WA. Sponsored by the Northwest Historical Miniatures Gaming Society (NHMGS), this year's theme looks very similar to Cold Wars': Obscure Theaters: Forgotten Battles and the Sideshows of War.
I don't have much to work on but it appears the Gnome Wars game might involve figures in a non-living state, and a tremendous amount of traveling on foot.
It's probably Highlanders :-p.
Check here for more info about the con.