I agree with Pixero on this one. This is the best workflow. I have been doing the same for years on many projects. Also, when your client sends an updated Revit export, you can just use the method above and then use ThomThoms replace material from the old model to the new model. The entire process is very quick.
The one caveat with working with Revit imports is that I always find that SketchUp tends to run very weighed down, so try to replace as much Revit garbage as you can such as railings, fixtures, furniture, etc. with SU components that are clean.
Jut yesterday I imported a model with terrible columns that had millions a tiny little triangles. They were so heavy and the 10 min it took to swap them out was well worth it.