Never had an ARF with wing tubes and am wondering if the tube is easily removable and replaceable from the fuslage, with this type of design, for ease of transport and set-up at the field? Am considering a Kankge Monocoupe, H9 Super Cub or DPM Super Cub.

yes to all. it is easier to transport the wings because they now come in two pieces. the wing tube is removed every time you do so.

Wing tubes are GREAT!

note... some of the ARFs MIGHT not be quite as careful of the quality of that tube as you would... do at least a 3 G weight test oof the assembled wing. (wings on chairs supported at 50% from center joint. load a sandbag or soething in the center to bring the weight to 3X that of the model. If it fails that... it would have broke first loop.