I bought this resin over a year ago at the same time I bought my first bass bow. It was recommended and therefore I tested it on all bass bows I got. At first (as long, as it has room temperature) it is kind of hard like a normal resin. The longer you use it, the warmer it gets and then it's like viscous gum.
The playability is great in my opinion, but I am not very experienced in playing the double bass with a bow and therefore I don't know many other resins for comparison. The efficiency in cleaning and the protection are also very good!