Prepared similar to EGC for a regional airline interview. Sim used for the eval was a C-level ATR-42. I familiarized myself with the cockpit by checking out some of the cockpit photos on airliners.net, and played around with MS FS2004 with an ATR add-on, to get the feel for speeds, call-outs etc.
Nice thing was the sim evaluation wasn't there to decide whether I could fly an ATR but rather to determine basic instrument skills and "trainability". Worked out ok, got the job. Happy.
-T-