This is the SD 1.5 Version of the same Watercolor model, with minimal changes to the training images and slightly different capture.
Works without the trigger words ArsMJStyle, Watercolor
Works great in the 0.4 - 1.5 range.
Recomend starting with 0.8
As Watercolor is strong existing style and looks really nice as an abstract painting, you can go pretty high with the strength and still get a nice result.