I would assume a mechanical keyboard is not being used portably? Couldn't the dongle just stay with the keyboard?

I do not use Linux on my XPS15. It's just a personal preference but I prefer Windows on my personal machines. I use many virtual machines on the laptop, and those have no issues, but that is a bit different than running it as a OS ;).

But I do love the laptop a lot! That is quite annoying that there are some Linux problems and that you pay a bit extra for MS. I stick with using Linux at work when I am purely doing development work, and at home when doing casual stuff, like a little coding, gaming, and web browsing I prefer Windows.

My previous employer got me a new macbook pro and every couple weeks I either lost a dongle or it broke. The cheap ones are really fragile, and the better ones still not great. If I had only one machine, or all machines took the dongle, I probably wouldn't lose so many at least.

I do use a mech portably...I like to carry one in my laptop bag and set up at a picnic table at a nearby park. I'll use the built-in keyboard for light work but with heavy typing I need the mech for ergonomics.

If you add a backlit KB I'll buy it. Room for a second HD would be a bonus but not a requirement.