Thanks for the replies.
I'm thinking about using it, because I've heard several reputable youtubers talk about it.
It's not because I can't get anything white, but it's claimed to have more pigments, thus better coating. I usually undercoat white as it is, but I'm starting to do my first layer with an airbrush and need some good touch-up now and again. Especially with some models that have rather dark colours with yellow details.
Also I've noticed with Vallejo, a range with which I am otherwise very pleased, gives me chalky results in my mixes.
So I'm willing to experiment a little bit.