I use several different rigs. Sometimes I carry a 3 legged stool with the e caller/decoy/remote in an army surplus velcro and buckle pouch molled to the stool and the gun in a biathlon back sling. I use the white military snow camo cover(pants and parka, the bed sheet looking ones)
Other times I use a Molle vest with mag pouches, water bottle carrier and the above mentioned e caller pouch Mollied to it and the above sling. Covered by military snow camo cover pants/parka.
Other times I carry everything in an Eberlestock Gunrunner pack and use military snow camo cover pants/parka.
What ever you decide on, I suggest Molle capable so you can add/remove bags, pouches, mag pouches, water pouch, etc.for just what you need for that day. The military arctic snow camo cover is great.