It’s not an aesthetic thing at all, it purely down to the practicalities as seen by those who have seen or tried it in the field.
There are some who make it work and like it, most know there are better options out there and go with those. I don’t want to have a specific ruck sack to enable me to carry a rifle, that jus seems daft to me, but doesn’t mean it won’t work for others. Although I cat see how a rifle can be as quickly deployed and on sticks ready to shoot from a Vorn as it can from a standard sling.
Not many on this thread are suggesting wood and blued is the way to go, other than from a cost point of view, it’s more the shape and weight.
As has been said, you have already made up your mind, so just go for it and see how you get on. People are only trying to offer you advice based on there own experiences, you have asked the question because you don’t have that same level of experience, it is entirely your call whether or not to follow the advice.