Adding rubberhose style control to a section of arm/leg is either not dynamic (just crank up the ease values on the bbones) or laborious (as in mancandy’s rig, with at least a lattice, curve, a bunch of extra bones and constraints, some modifiers, etc.)
I hadn’t planned on rubberhosing Gilgamesh, but one of the animators recently expressed that bending limbs ever so slightly can be used to enhance poses even on fairly realistic characters, so he would like the control. I whipped up a quick script/operator to do it, called Raymond Curver so now all I have to do is to select a bunch of verts, then select a bone I want to rubberhose, then run the operator. A quick demo below:
The script is going to be released soon, but it does depend on quite a bit of tube conventions and a bit of knowledge of our pipeline and scripts. This should improve after the project is over and I have time to generalize our tools.