He did not combine the two, I did the MEI first, and then I did the CFII, so needless to say it was a long day.
I took mine at Williams Gateway in Mesa, AZ.
MEI
He first asked about VMC, specifically how much to pull the power back once you lose directional control. He said the answer should be not at all, but pointed out the FAA book says "sufficiently." He then asked about how to safely simulate an engine failure on take-off, and the answer from the FAA academy was to pull the mixture control, and one second later pull the other. He then asked about zero side slip and explained that the difference between the critical engine and the non-critical engine is negligable. He said that proper correction should be to keep the wings level and use the rudder. Next he asked a couple of systems questions and that was pretty much it.
CFII
Started asking how a couple of the instrumentts work. Then he asked a couple of GPS questions. Asked if there was visibility or a ceiling restriction on both on approaches. Asked if where the final approach fix was on an ILS. Talked about wether or not you file to an IAF or feeder fix for your flight plan. Thats about what I remember.
Like I said a lot of the questions while not neccessarily beyond the scope of a checkride, just hard to answer especially since he believes that a lot of info out of the FAA books is in accurate and I read those things religiously. Nevertheless, he did back up all his claims with data.
Anyhow hope that helps.