When I get Poser 4 or 4.1 I may try it. But all too likely I would find that Poser's equations / algorithms (as controlled by the joint parameters) that are adequate to describe the behavior of the flesh of his neck as his head moves, will act hopelessly wild when extrapolated to apply to a loop of breathing tube that may go out to 3 or 4 times the radius of his neck away from him. I have been on computers helping students with their projects since the late 1960's, and in that time I have had my fill of the misbehaviors and ornerynesses of extrapolated fitted equations. I had it in the last few days with my scuba set model's "stabbag0" part acting wild then I posed its stab-jacket, until I set it to "do not bend" to keep it under control.