Great photos Scott
I would absolutely endorse wearing of flightsuits in helicopters of every variety, and bone domes too if you can. Helicopters often give little warning of impending failure, are quick to the ground and burn well! Chances of survival and minimising permanent injury are much, much greater when wearing the above. I remember reading a report written by an RAN pilot about the issue.
Even in some fixed wing ops flight suits and helmets would be of benefit. Certainly much better than the poly/cotton ice cream suit, which would only melt to your skin in a fire.