I haven't but considered it for a cutdown frame that I have. You'll understand why I decided against that in my case as the frame is TV200.
However, having met Chris & procured other products, if I were to re-loop, say, an Indian GP, I would not hesitate to obtain a firm price to compare with current OEM steel alternatives. As for legshields, Chris manufactures his skinned on both sides & it would be hard to find steel items as good, so it's very likely I might buy a set for one of my Italian GP's & save the NOS set I have!
I haven't answered your question, but I hope my opinion may help & suggest you ask Chris for his knowledge of how the job best be tackled:
http://www.grpscooterparts.co.uk/parts-list.php