[LT. Ox]

How much “other “gear do you think would be carried? The thing is it is not a long term outfit, by that I mean it is not for more than a few hours of wear at any one time. If you have a long way to travel for insertion then you will carry it all but the last portion.
You may have a need to stay in it for, say up to twenty four hours or so, at the shoot location, you may need to use it to get into the shoot position but only the very last part. Some water, a little food, com gear and your weapons, that is about it for equipment while in the suit.
After that it is up to you as gm how much the suit will protect him from observation. I have seen observant personnel walk, while actively searching, within two feet of a prone sniper. I have seen a troop spot another sniper in his suit at over a hundred yards; the trooper was taking a drink from his canteen at the time. So it depends, nothing is assured in this type of competition.
I am red-green color blind, I “see” camouflaged personnel better than those with normal color vision. The reason for that has been explained to me by my trainers, it is because I see shape and form over color and that movement is part of my survival instinct, be that as it may, I know that a ghillie suit helps “hide” a soldier and I know you can still be seen while wearing one.