A few things I experienced:
1) At the airport they saw the spike feet and tools for swapping feet for my benro and asked their manager if I was allowed to bring that on the plane. At Pearson in Toronto no one bat an eye lid. Although another time at Pearson I have had a set of allen keys taken away from be cause I forgotten I had them on me
2) If you are traveling with someone who isn't carrying a camera kit it is of course possible to use them as a pack mule for your tripod. As my benro's relatively light I usually have my wife carry it when we travel. When she gets tired than I take it back. It's win win as I can carry a few more lb in my pack for camera stuff and she gets her photos. Now I got my OM-D I think that's going to change though she knows the new kit is feather light :P
3) You need the tripod you are going on a trip that likely cost a fair amount of money. Why would you want to go and not be able to get the shot?
Tripod shot (didn't necessarily needed the pod but helped:
Also did this without a tripod:
It's actually a 3 shot HDR. The 7D, IS lens and fast burst rate means it was possible to do that without resorting to a tripod. Tripod wasn't allowed inside Sainte-Chapelle anyhow.