Nigel, Ladies and gents get transported by scruffy crummy heli drivers in the bush, or sleek smart looking airliner style uniform on onshore medium twins. At least that's my perception.
You guys doing utility be glad your uniform is something practical, rather than 'black slacks and
white pilot shirt'. I'm junior enough (helicopters) to have used 'company logo T-shirt' but prefer collared long sleeve cotton shirts for sun protection if nothing else. I'm dreading having to wear those even instructing light piston singles later on.
As to the picture posted, it's still considerable body/skin surface covering, the blue overalls. Having torso and legs covered would be higher on my agenda than forearms (not even whole arm from shoulder) for post-crash fire probability. It's down to 'Rule of Nines'. It also shows that baseball cap can be handy as well.