I must admit I detach the camera from tripod when I want to move any distance - I use an Op/Tech dual harness strap system so set up tripod, attach camera (via QR plate), then unclip it from the harness so I can wander about - when done for a location, clip the camera to the strap, then detach from tripod and fold tripod legs.
Depending on how far I am going (and terrain) I will either sling the tripod over a shoulder, use the carry strap, or, if I'm heading any distance, put it back in the backpack.
I have a Manfrotto 190 XProbB with the basic 804RC2 head, so it's not particularly heavy.
I've been on a few landscape type photo days with a pro - some have carried the tripod & camera over a shoulder, but only for fairly short (~1/2 mile) distances.
One thing that has just occurred - I will often have my Lowepro Nature Trekker II backpack with me to carry gear in - the shoulder straps on that are quite thick, so would act as padding between tripod and shoulder.