If I understand you correctly, yes. freexrdp has an option to render only a single window instead of the hole desktop. This works amazingly well and feels native. This is the trick WinApps uses.
You could either use WinApps or create your own script and add it to a desktop entry. Users can then open RDP Gimp like any other application without even noticing.
You could either use WinApps or create your own script and add it to a desktop entry. Users can then open RDP Gimp like any other application without even noticing.