Well, I took the mirrorless plunge.
Battery’s charging now. First impression: the build quality is really good for a tiny camera. I went with the 12-40 f/2.8 as a solid mid-range zoom. (Sadly, it’s pretty hard to go really wide with micro four-thirds since it has a 2x magnification factor over 35mm.) The lens build quality is top-notch as well.
Expect a zillion test shots at upcoming conferences.