I've been using a new MBP 15" with touchbar for a few weeks now, and these are my thoughts. Bear in mind, I've got a 27" iMac and a 2013 MBP at home, so I'm no stranger to Apple products, and my OSX setups are very similar. All Sierra, all running parallels installs of Windows 10, all with similar apps.
1) I'm having trouble with Magic Mouse 2 dropping out on it all the time. Sometimes it says it's disconnected and then reconnects again as the old magic mouse did, but you can't use "poor battery contacts" as an excuse.
Sometimes instead of saying it's disconnected, it simply freezes. The Macbook continues to respond with keyboard shortcuts and programs continue to run, but the mouse won't move or click. Within 2 minutes it resolves itself and continues to move.
No rhyme or reason, 100% charge on both the Macbook and mouse. Go figure.
2) USB-C -> Displayport cables don't seem to work at all (Bought one from the Google Store and returned it because it simply wouldn't fire up my Dell Ultrasharp 24").
I've got a separate "dongle" that has ports for 1 x HDMI, 1 x USB and 1 x USB-C power pass through. This works intermittently. Sometimes I have to reboot. Clamshell mode is extremely hit & miss. I've tried multiple HDMI cables, but at least it works more often than USB-C to Displayport, which didn't work full-stop.
3) Don't use the touch bar very much at all, unless it's to change screen brightness or volume. I put lemmings and Nyan cat on it, and since then it's mostly unused, as I tend to use it in clamshell mode when I'm at my desk. Even when mobile it's rarely involved in my workflow.
Other than those points, it's nice. Light, nice screen, looks cool. I'm hoping that the above problems are related to the build of Sierra vs the hardware profile, and subsequent updates will fix it.
