Pros
If you find the right company to work for and the right management team there is a lot of potential.
Cons
Koch 'Lifer's' constantly remind you that Koch is different. In some ways, yes it is different, and that is good. In many ways it is not but since they've never worked outside of Koch other than a year or two out of college they really don't have anything to back that up with. Poor performing employees with good connections get shipped around to different roles in different companies. Pet employees of a Director or VP are promoted above their ability. Lower level management or individual contributors are left holding the bag when a business decision doesn't pan out but the ones who championed the effort get promoted or assigned to a different role. Doesn't sound all that different, does it?