Also look at gphoto2 for setting up your camera, on my camera, gphoto2 can do some pretty cool things like set the date and time (much better than doing it on the camera) and even take photos. When I went more professional I switched from Shotwell to using Rapid Photo Downloader and I created some scripts around sxiv (https://github.com/muennich/sxiv) that lets me pick out which shots I want and then I run then through darktable. I haven't gotten color management yet, just not in my (college student) budget.