On the last "Op" I was on, crews were flying in desert DPM kit. This is infinitely superior to standard flying suits when in a hot environment.
Given the magnificent aircon available to Albert whilst on the ground (none) crews in normal flying kit are invariably soaked with sweat before they've begun the Starting checks. Flight deck temperature easily gets well above 40degC the effects of which are compounded by the hot flying suits. Crew members working outside (GE, ALM, movers etc) are often even worse off. This usually results in flight deck members stripped down to their t-shirt and the guys outside working in shorts. Doesn't look smart but I'd rather get the job done comfortably than die of heat stroke looking "smart"
Desert DPM kit is so much more comfortable in hot weather than flying suits. I only spent a month operating in it but then found going back to flying suits a real pain. I just wish we could wear it to and from Akronelli too.