I store my RRS tripods and monopod in their very nice, custom-sized quiver bags. I often use those for car transport, but not for walking around. I use the tripod attachment on my Lowepro Flipside 300 and 400 AW with my travel tripod (RRS TQC-14 w/ BH-30 LR), and that works great. But, it wouldn't really work with my full-sized tripod (RRS TVC-33 w/ BH-55 LR or PG-02 LLR gimbal) - only one leg (vs. two) would fit in the pocket, and the tripod would stick up way too high. I do attach the TVC-33 to the side attachment of the (much taller) Lowepro Lens Trekker 600 AW II, and that works well (bigger pocket, fits two thick legs).
I often carry the monopod (RRS MC-34 w/ MH-02 Pro) on a Lowepro belt, attached with a Maxpedition Universal Light/Baton Sheath.