As I've been researching converting my mtn bike into a "hunting bike," I've also been thinking what a good business idea. As usual, dollar short, hour late.
I don't like how they have the scabbard set up. I also see low hanging limbs hitting or knocking off the rifle/bow or providing for an unwanted wheelie. After rejecting using an atv rifle/bow rack set up on the handlebars (similar problem with limbs/branches on each side of a trail, plus mud splashing up onto the rifle), I've been thinking of attaching one of my old soft rifle cases to the horizontal top tube of the bike. Have seen current era Swiss Army bikes using that set up as well as WWI era miltary bikes.