its good quality acrylic, nice high pigment quality and density, thins well and doesn't tend to clump.
The packets are a bit of a pain because you can never squeeze all the paint out at the end, but you can cut them open and dip brushes into them if you know you're going to be using the entire thing. (not as dramatic as splitting one of the metal tubes down the side to smear.)
should work just fine,i'd advise getting some and using it straight from the pouch by loading your brush lightly rather than thinning it ,because it's of a quality that will give great bright results.
(i don't work for them i promise. )