Not going to laugh at that one. You use what works for you.
When I bought my .270 Hunter Package, Jays Sporting Goods couldn't find the soft case that was supposed to come with the gun. I was looking through the isles and knew that I was going to want shoulder harness. I asked them if they would throw in the TC Shoulder Harness, and they agreed.
It's the only shoulder harness I have ever used for this gun, and it suits me fine. I do a lot of still hunting with this pistol. I have about 1.5 miles of trails through my 80 acres, and about 12 differnt places I can creep up to and overlook many different food plots. When I creep up to the spot, I do so on my hands and knees....almost a comando belly crawl.
A shoulder holster is almost an absolute must. I can be lying completely on my stomach and draw the gun easily with this set up. It is also protected from the rain and snow.
I'd be dragging a slinged pistol through the underbrush if I didn't have the shoulder holster. Wise to evaluate how you plan to hunt with the gun before you buy.