So no one is using “go around “ button on the skyview and o the gps?
I have neither with a Dynon HDX and Avidyne IFD 440, and I don't see the real value. I am just getting familiar with all the functionality and integration of the Avidyne, Dynon, and the autopilot and my opinion may change, but these are my thoughts.
The Avidyne will auto sequence to the missed approach at the MAP if you have that functionality set. Otherwise there is a soft key to enable the missed.
On an approach coupled with the autopilot, I want the IFD to always control lateral guidance on the approach and on the missed. I want the IFD to control the vertical guidance on the approach. If I get to the MAP I would press the up button on the AP and apply power, flaps up. The IFD with auto sequence to the missed approach procedure. The AP and IFD will control the lateral guidance and the AP will control the 500 ft/min climb, I could then adjust the climb rate by pressing the up/down button. At some point I would adjust the altitude bug to set where I want to stop the climb.
If I wanted to go missed prior to the MAP, I have the option to go the altitude hold (press alt) which will maintain the current altitude, or the up button to start a climb. The IFD and AP will maintain lateral guidance to the MAP and then auto sequence to the hold procedure.
IMHO, I do not the autopilot to go into track mode on the missed. I want it to stay in Nav mode. So it is just a matter of pressing the Alt or Up button on the AP panel. A remote IFD missed button may be of value, but there is a soft key on the IFD that is easy enough to get to, but the IFD will auto sequence minimizing its value.
I am by no means an expert and I am still working through how my systems all work together. It may be far easier to just disconnect the AP, fly by hand, stay in control of what's happening and then when appropriate reconnect the AP.