Ocr advice needed

Hi all,
I am looking for a bit of advice when using ocr.

I have done quite a bit of tradition sand & cement in the past and now do mainly ewi thin coat systems.

I have a customer who need a the front of his house rendered on a budget so I have suggested using ocr as I understand it is a one coat system mirroring the traditional sand and cement finish which he can then paint.

Firstly am I correct in thinking ocr would be suitable for this ??

Secondly what is the best way to finish...

Ocr advice needed