Just as longbows aren't the same, bow quivers aren't either. There are large bulky quivers that hold lots of arrows and smaller quivers that hold less and weigh less. You also have several ways to attach to the bow. I have heard praise and criticizm on each of them. Personally I believe that it's an individual thing. If you only need 3 or 4 arrows and shoot a moderate size two blade broadhead, then why have a bulky quiver on the bow. That is the group that we targeted from the begginning, those who wanted only enough quiver to handle these 3 or 4 arrows, and did not want excessive weight to change how the bow shot.
There are also those who shoot larger or longer broadheads and need just a little more hood to accomodate them. We now make a Jumbo I and Jumbo II to accomodate most of them, but we continue to keep the weight down.
There also are those who use their bowquiver as a stabilizer on the bow. We don't make those. We are content to keep our quivers well under 6 ounces which makes it the lightest weight quality quiver on the market.