I took a gamble with what is called a "Bow Monkey" at bowmonkey.com and I gotta say, it is definitely my favorite way to carry a bow. I've been looking for a better way to hike a bow in and I think this is it. I was worried about it being 3d printed, but it held up great, I'm going to take it out again this weekend and test it some more, but so far so good. I joined just to post this on here since until now I couldn't find any reviews on it.
It looks like https://bowmonkey.com/ only has a couple pages, here is their purchase page that contains the Bow Monkey device: https://bowmonkey.com/purchase
Welcome to the forum. I checked out the site and product. I personally use bow spider for my long hikes. I need it locked in pretty good with little to no chance at coming loose. I think what you shared is an interesting product and would serve a slightly different purpose with some overlap. I can't seem to get the bow spider in a comfortable position when wanting to walk with my bow in hand, with a little assistance in taking the weight off my arm.