Hi Oiler,
Raspbian is supported. But there seems to be problems with latest releases.
www.proview.se/v3/index.php/forum/3-help...llation-problem#9352
It's not blazing fast if you run a development station on the Pi, just give it a try.
But it's the easiest way.
It is always a good start to learn Proview on a x86, before you start with the Pi.
The learning curve by using the cross compiling possibility in combination with pwrrt (process/operator-station) can be steep if you are new to linux.
Good luck.
/Marc