The everyday items are not the same materials used in the hunting stuff. The everyday stuff is designed for casual wear. Ie. some of the pants and shirts have some cotton in them, the cut is different, etc. Sure you can use the everyday stuff for hunting, but it’s not the same. Sitka designs all of their gear for a specific use. Sure you can use the whitetail line on an elk hunt, but the performance will not be the same. If you use their gear for its intended purpose you will be much happier with its performance.
I get a kick out of guys saying they spent all this money on KUIU or Sitka Mountain hunting gear and froze their a$$ off sitting in a Treestand, so they label it as garbage. You can crossover any of this high end gear, but don’t whine when it doesn’t work when you’re using it for something other than its intended use.