I guess this would be great if you have the room for it. I certainly don't have room on the inside of anything which means this would installed on the outside somewhere.
When it goes on the outside then it is saying "TAKE ME-TAKE ME" along with the batteries and propane tanks... Would be something else for us to worry about. I try to maintain the "OUT OF SIGHT OUT OF MIND" routine here the best I can...
I just coil my removable 25-foot 30AMP cord in the front storage bay next to my batteries in the fifth wheel. I also carry an 25-foot 30AMP RV extension cable as well. The 30AMP cable on the OFF-ROAD POPUP presently pushes into the inside storage area behind the converter I did install a locking door to cover the hole. I am planning however to change this to the disconnect type of shore power cable so I can add an outside connection from my 1500WATT PSW Inverter and then use a short shore power adapter to connect my shore power to the 1500WATT Inverter output. "Poor man's transfer switch"... After I get the 30AMP power plug installed on the off-road POPUP I will then use my full width metal battery box installed on the trailer tongue to store my 30AMP shore power Cable.
Want to incorporate something like this to handle all of my 120VAC power sources for the OFF-ROAD POPUP trailer.
Would be interested in where you end up installing this manual crank-up shore power cable box.