Would just like to clarify one thing about the IR contamination mentioned in the article:
IR contamination is primarily noticeable with some synthetic, black materials, showing them as a muddy, dark brown instead of pure black.
It can also affect overall image contrast, which is harder to discern. But with a camera like the A-Cam dII, which is already intended to have a flatter look, you'd want to combat this issue as well.
Fortunately IR contamination can easily be dealt with through an additional filter such as Schnieder Optics True-Cut IR filters. There's also ND filters with built-in IR cut from others, but you risk accidentally stacking them, which is also a bad thing. So I stick with the single, dedicated one.
Just wanted to clarify...