Anyone using qTest Parameters?

My organization is using qTest for test case management, and am considering installing an add-on, qTest Parameters.  I've reviewed the literature provided by the vendor about its features and benefits, but I'd like to learn from anyone who has already adopted it for their own QA processes about their experiences with it.  Specifically, I'm interested in learning how it has benefited, where its pain points are, overall impressions on its usefulness, and whether this is something you would recommend to other fellow qTest users.  Thanks in advance!