seasonal
I found it great to wear an OE tech soft shell windbreaker,BDU's,shamagh, tactical hat, tactical gloves and combat boots in the colder times of the year. When it gets hot out I usually wear a set of bdu's with rolled sleevs, tactical hat, combat boots, gloves and use a camo net to cover yourself or a ghillie blanket. When it is freezing out I wear an ACU ECWCS coat black snow pants white shamagh, gloves, combat boots, and a sock hat.
The reason I don't wear a chest rig with any of this is because when you are a sniper you don't need alot of ammo and you need to be light weigh because when you have a rifle that weighs twice as much as the next guy's rifle you don't want to carry that extra piec of gear.
I do sometime wear a ghillie suit but they are very uncomfertable and there is very little time when you can wear one and stay cool.