I've worn down garments "while on the move" probably 5 days in 20 years. What I do always test for in case I have to wear them in such situations is range of movement. When I tried this jacket on it rose up by a very large amount when simulating going from being crusifxed(cruicformed?, there should be a word for this dammit!) to overhead planting of a tool. This left the waistbamd stuck at midrift level. It also wasn't going to move down again of its own accord.
Conversely all the phd stuff I have, though they don't extol the technical nature of the cut so much is actually cut in such a way it would work for me if I needed it to. It fits where it needs to and they don't seem to be fussed about being a "bit blousson" to allow you to move even if it looks a bit ####.
edit: forgot to say, it totally didn't fit me across the back either. I would have had to have gone up a size or two, resulting in waist void.