For those who own this filter holder.

I have Schneider 72 Xl, and at some stage in the future intend to purchase the CF, I understand that I need to use the Lee 115 Push on holder

1) On what lenses do you use this
2) How many filters can you use with holder
3) Any pictures of the holder
4) I have a B+W 105mm Polarizer, will it work with this holder alongside a standard filter - will it vignette?

5) Considering the CF is 112mm and lee filters are 10mm, surely if fitting a smaller filter it will vignette