I like the rules, have a 28mm CiCairo set up, and lots of 15mm sets (Egypt, Fishmen, etc) but I've only actually played CiC rules a few times. Mostly for want of players.
I usually just adapt TSATF to my horror games.
Is CiC still big? If I dont finish my "Shadow Over St Lucie Village" TSATF game in time for Hurricon, I might run a CiC Cairo game.