Creating a mobile clipping/construction plane

I do a lot of modelling from 3D point clouds (from Laser scanners).
I typically create surfaces by creating sections through the point cloud , then lofting them together.
Is there a way to set up a path through a point cloud, then get the clipping plane + construction plane with Ortho View to step along that path at set intervals ?
I need this to create sections of tunnels etc.