Pros
Unique culture. Very Wisconsin no matter where in the world you may be working for Promega. Very, very, very, very smart chemists; some outstanding non-science folks, too.
Cons
Promega has these magic chemistries that can solve several of the world's most pressing problems; I'm not exaggerating here. It sells some for RUO, some to bigfish biotech, and many forever languish in the dark corners of RDC. Why? Search for... Usona, Bill Linton, Kellner and Bland, lawsuit, lawsuit. Dane County, lawsuit. Until and unless the struggle for control is resolved, no major business decisions will be made. Bill is too busy with Usona and the lawsuit; nobody under him will do anything because lawsuit and, who knows, maybe new CEO, then IPO. In the meanwhile... the Turner operation bought in 2009 has been happily run into the ground. PBK may be getting there, too. That's best-in-class hardware that Promega never figured out how to sell, keep current, and build upon. Promega, culturally, is a reagent company. These reagents will not take over the world by themselves. Your choices are: Make the hardware yourselves, partner with the bigfish or perhaps smallfish who can do hardware, or contract it out and put your label on it. Experimentally it's been proven that the first and last choices don't work until/unless management gets serious about selling these things, and in the middle case there isn't much profit. Tragic.