I had a RMBP 15 2017 version and recently switched to Arch Linux on Lenovo Thinkpad X1 Carbon 6th Gen. I have nothing but good things to say about the experience. I do miss some of the multi-touch gesture stuff, but I've gotten used to the new workflow. I love how customizable Arch Linux is and how great the keyboard feels. Plus, having physical trackpad buttons has been really really nice.