We changed ours out to a Samsung in our 2004 Marquis and while there is some labor for trim wood we had very little problems in getting it installed and thru the coach door easily. After having the household model installed, we have had a Beaver with the RV style refrigerator from 1994 to 2012, my wife said she would never go back to an RV gas unit no matter how good it is supposed to be. The residential unit is better in all ways, size in particular, and we did nothing but using the same inverter as was in the coach but just made sure the Samsung was plugged into the inverter circuit so you have power when you are not plugged in to shore power.
John Nord now has the Marquis and you can ask him how they like it. Last I saw him on March 9th in Arizona it was working just fine and full of Alberta Beef in the freezer.