CRJ pilots have some interesting notions on how the ERJ autopilot works and what it is actually capable of doing. One can easily overspeed or underspeed, blow through an altitude or go unstable. The guidance panel is a control just like the yoke and pedals. If you don’t know what you are doing with it, you can really paint yourself into a corner. I see CRJ captain transitions into the ERJ that only use manual modes, because they either don’t understand the rest of it or they just want to fly the ERJ like the CRJ because that’s where they are comfortable. It creates a lot of work monitoring captains like that.