It mostly works but I would say anyone who flies behind one of these things and doesn't positively plan on using the mechanical backups some day, is asking for trouble.     I thought about what transitioning to the backups IMC would feel like after, say, 700 hours of the PFD and I didn't like it.  This is not the same as having a 6-pack and subtituting another gyro in your scan.  It's not just a matter of looking 3 degrees to the left or right to use the other instrument.   It's getting your mind to process the information completely differently, now integrating information from 6 different gauges again. I might feel differently if I had more IMC time in on the 6-pack.   One day I may change my mind but at my experience level, which I consider relatively low at 850 hours, I'm going to stick with a standard 6 pack + backup gyros for now.

 

If I ever do put one of these in, it will likely be dual ahrs, dual power supply, muiltiple screen, and I'll still have some old gyros around.