My Calumet Graphite Monopod and Kirk MPA-1 head is traveling around somewhere in Croatia. I left it on a bus in Dubrovnic and have never seen it again. I really missed this tool during the rest of my Italy, Croatia, Greece and Istanbul trip because I was using it as a walking stick as well as to support my camera. My wife and I had climbed the City Walls of Dubrovnic; which is a really hard climb for a 73-year old guy especially on a really hot day. I took a bus later and was a bit tired so I didn't realize that I had left the pod on that vehicle until we disembarked and the bus had driven off...
Calumet had discontinued the monopod I used and Kirk discontinued the MPA-1 tilt head.
Luckily, Calumet had another graphite monopod on sale which is heavier duty than the one that I lost but only weighs a few ounces more. Additionally, Kirk Enterprises has replaced the MPA-1 with an MPA-2 head. The MPA-1 was always on the edge of being too light duty for my uses (Canon 7D with 400mm f/5.6L or 300mm f/4L IS with 1.4x TC) but, the MPA-2 is heavier duty at only a slight increase in weight.
The Kirk MPA-2 is less expensive than the comparable RRS tilt head (but, is two ounces heavier) and is a better unit that the Sirui tilt head which is being offered on eBay and other places. I could have purchased a Manfrotto tilt head and added a Arca Compatible Clamp but, this would have resulted in a duplicate of the Kirk MPA-1. I wanted a more substantial tlt-head because I often carry my camera on the monopod over my shoulder.
I carry my 7D with 17-55mm f/2.8 IS lens and an L-bracket. This allows me to shoot in really low light conditions. I also carry a pair of double faced Velcro strips with which I can secure my monopod to fences or other stable platforms which gives me the stability (but not the versatility) of a tripod.
Besides, this old guy can really use the help of a sturdy monopod as a walking stick