100mm

Does anyone have experience of using both the Hitech Firecrest and the Nisi filter holder system (100mm) that includes the polariser? i.e. Firecrest http://www.formatt-hitech.com/hardware/firecrestholder Nisi https://www.amazon.co.uk/NiSi-System-Adaptor-compatible-Singh-Ray/dp/B017SD5OIY...