I haven't managed to find a thread addressing this question. I currently using a 27" retina iMac with an old 30" Apple cinema display as a 2nd monitor (2560x1600). I've been thinking about replacing this setup with a 13 touch bar macbook pro with a 5k display and wanted to know if I could still run a second display if I put the macbook in clamshell mode? Has anyone body tried this? I'd want to maintain 60 Hz frame rates. Most of my computer work is writing papers, proposals, and examining data and I've come to love lots of screen real estate. Thanks in advance for any feedback.