For many years I preferred a bowquiver on my bow. You still can't beat them for convenience and arrow accessibility. Also, the added weight can make a bow 'easier' to shoot...
On my longbows, I prefer not to use a bowquiver. Mainly for aesthetic value....Some may not care about aesthetic value but I'm into that kinda stuff...
I like my Safari Tuff quiver, but have been using a 'raptor style' homemade quiver shooting 3D's for years, and am appreciating their simplicity and light weight so much I may use it for my hunting quiver this fall...