I hunt with them also use them for shooting sticks, cant see the need for shooting sticks when you have hiking poles.
I carry just 1. It's great for hiking and I've learned to use it as a shooting stick by propping it against something else, from my leg to a bush, whatever's available. Trying to fumble with 2 poles and a rifle is more trouble than it's worth.
I';ve never found a need (or desire) for 2 hiking sticks. 1 is sufficient for crossing streams, hiking uphill/uneven terrain.
Why 2? You shouldnt be using your upper body to ascend.
Use as shooting sticks in nice, but I carry thinner sticks for that. But 2 to shoot off of, ok. But for hiking? I'll keep a free hand, thanks.