Hm, the obvious criticism is that it's not open source, unlike STAN and PyMC, and "only" has the advantage of being about twice as fast. I haven't read the art

Hm, the obvious criticism is that it's not open source, unlike STAN and PyMC, and "only" has the advantage of being about twice as fast. I haven't read the article thoroughly enough to know if the samples are of the same quality.