For me the cons of the etag out way the benefits. The regular tag I just put in my wallet and use it when I harvest an animal. The etag, I had to still carry a piece of paper to attach to the animal, along with something to write on the paper, along with some kind of tape or something with enough strength to attach the paper to the animal without worrying about it coming lose or getting ripped off during a pack out, and a phone that has a charge. Pray your sharpie or pen works, especially if everything is wet. Hope your phone doesn't get bounced against something and get destroyed, or you forget a phone charger and you can't power it on. The only convenience I see with an etag, is you never worry about losing your tag. I tried it once and then went back to the physical tag.