Wasn't able to get anything out of the vortex, I am not sure if it's my orientation and understanding of the coordinates on the planet, or what.
But I did spend a long while adjusting the scale and displacement of a PF and was able to get some large wraps, most of them too jagged for good appearance, but there were a couple I was able to mask in with a painted shader that look rather nice.
Some post work to reduce noise, and accent features, and a little blurring on random rough spots in the "clouds" and you got a really nice gas giant.