Here's a few shots to describe a little more info.
This shot is with no filters and WB set to daylight:
This shot is with the 5 stop ND 32 filter. Same wb setting and metered in manual. The camera stated a 5 stop difference, but the exposure looked about 1/3 under to my eyes so I over exposed by 1/3 stop and the exposure seems pretty spot on. Usually ND filters meter slightly different and I've never had one that was exactly as stated (ie 3/5/9 stops). This one is fairly close, I have seen as much as 2/3 stop difference than stated (Lee NDG's funnily enough were the worst I've seen).
The magenta cast is very easily removed in Post prod, +300 blue / yellow, +29 green /pink sliders in light room seems to make things approx neutral.
This last shot shows the mechanical vignetting when using maximum vertical shift with both the ND32 and CPL. There is no vignetting with the side to side movements in portrait orientation, but I would assume the same vignetting in landscape orientation with maximum shift. But if we only shift using the shortest range, giving a squarer picture, there is no vignetting with 2 filters. If we only use one filter there is no vignetting at all.
The CPL is labeled as a slim CPL...and to be frank, it's not that slim. It's no slimmer than the big chunky 105mm CPL's available from Lee, Sigma and Heliopan. It reminds me a lot of those filters and I guess that it's the volume of glass that dictates the need for a chunky rim. These are not flimsy filter but quite robust feeling.