What I was originally asking for which may be a little lost in my initial explanation was the functionality in Revit MEP to model an electrical conduit the way you would model a flex duct in mechanical services.
I need to model a conduit at the normal diameters (23mm, 50mm, 100mm OD) from Point 'A' to Point 'B' like we would draw a spline in AutoCAD. it needs to snake around corners etc and be on the system category of electrical conduits.
Why would we model it as duct/pipe? it's an electrical fixture.
This is a major problem in Revit MEP to just have the function to model 'rigid' conduit, the practical application for this is not like this anymore.
My initial post has a screenshot of a drawing from AutoCAD, if we could replicate this function Revit MEP and have as a 3D element, this would make mine and many others lives easier!