It's hard to gauge with saddle harnesses because none are built to any standard. Manufacturers can use whatever method they want and there's no requirement for testing (which is why I never ascend past 20' with mine).
The biggest thing is to examine stiching throughout AND examine the bridge area. On Arb saddles, you also would examine any rings or life safety attachment points for hairline cracks.
If you SRT with your hunting saddle, you are putting similar forces on your saddle to a tree worker (1-1.4x your body weight)
If you exceed the weight limit of your saddle, you will put excess strain on it. These warnings are not just their lawyers protecting them.
If you shock load any saddle, it should be retired. Exposure to chemicals etc etc
People like to say don't listen to the manufacturer. In work at height, these manufacturers perform extensive testing and have a good idea when strength losses or failures occur. That being said, they do leave a safety margin in place.