Russell, if you are using AutoCAD for mirrored views, then you really don't need AutoCAD. You can make an unlinked mirror view in SOLIDWORKS by using the Convert View to Sketch command in the right-click menu on a drawing view. Convert the view to a block and place the block on the drawing. Explode the block and then mirror the sketch.
Do you need to have the view linked to the original geometry?
Also, what is your expectation for RCP?
It would be really nice to have the option to be able to create a mirrored view that was a typical drawing view in every other respect. Linked to the part or assembly as a view that will update. Turning into 2d unlinked entities whether in AutoCAD or in Solidworks is time consuming to create and to recreate when things change like they do. I didn't realise you could do what you said though I will give it a try.
When you see a reflected ceiling plan next to the floor plan it makes sense that you want to see the ceiling in the same orientation to the floor plan as a plan view. I create a section looking up to get the ceiling view, what you see if you lie on your back looking up. Its not architectural convention, and harder to work out what you are looking at.
Ive thought a bit more on what I would like to see.
A button on the view layout tab next to break or crop view with a mirror icon that you apply to an existing view in a similar way.
Hit this button and select a view. Choose a plane in the part or assembly to mirror about. i.e. front, top or right.
Have that view now show the relected image about that plane.
Have any view projected off that view be similarly mirrored.
That would be awesome, I often have a need for this too, what I usually end up doing is doing a mirror of the assembly in the assembly model, and use that.