I bet that never saw an inspection. In Memphis, we can run that inside, but have to hardpipe anything outdoors. Yeah woulda been a whole lot easier to hardpipe it. Those compression fittings are about 8 bucks a piece.
Here in Alberta, Can. We can use Gas-Tite, only if it's protected from potential mechanical damage on the outside. But it's more common to just hard pipe it. Our inspectors, would likely give it a 'thumbs down' in this case.
Teach the apprentices right... and learn from their questions and ideas.