Checkboard,
How about this then, for a pilot jacket:
It's good, until you jump into the cockpits with screens rather than steam and have it reflecting insanely well off the screens, in some cases enough to effectively not see any information on the screens. But even then you can get some pretty nasty reflections off the round dials.
White shirts are also pretty bad culprits for reflecting off glass cockpit panels.
I have had to get my coey to remove his high-vis before because reflection was so bad i couldnt read the engine instruments on the centre screen. Sectors were short enough to not normally worry about taking the vest off, putting it on, taking it off etc, so we often just left them on- not so much any more in the glass machines.