I have been rigging up a model of a cable to be flexed by an Armature, and the Armature is in turn controlled by a Curve via ‘Spline IK’.
The it occurred to me to skip the Armature bit and just directly control the cable with the Curve by using a Curve Modifier. The results seem identical.
I expect I am missing something here; what are the advantages of using the Armature with Spline IK? You might say the Armature can have extra controls such as bone constraints, but in my case I don’t really need them.