How much does it save? Not much of course. But I went about the last 3 years boning out elk (3), deer (3), antelope (3), and caping bears (2) with a single Victorinox 3" parer on each trip. That includes undoing joints and taking off skulls. They are like $6-$7/ea and I use them around the house after a couple re-sharpenings. It weighs 1.0 oz with a homemade "sheath". I also have a tiny swiss army knife that is always in my emergency kit. It weighs 0.7 oz.
I get why people prefer the feel of a good solid blade or high quality custom knives; I had a couple of Winston's that were really nice to use. But I used to think it was necessary, and in my experience it just isn't. If I like the performance of a 1 ounce knife, no reason not to save a bit. If you're not backpacking it barely matters, and if you are it can always be argued that a few ounces still doesn't; as wllm noted, it's kinda more about the mentality.
There's the backpacker who goes hunting during hunting season, and the hunter who sometimes goes backpacking. One is not better than the other, but they are not the same creature.