I just got the MX mechanical Mini in both the tactile and the clicky version. I agree with some of the other commenters here that the brown/tactile switches are little to subtle. After having tried the clicky/blue switches as well, the clicky ones are so much better to type on, even though it's the same keyboard in every other way.
I still think the Magic Keyboard is really good for what it is but typing on the mechanical keyboard is just a lot more fun, especially with the blue switches it. It makes me look forward to typing away that much more. also, since I have an Apple Watch, I don't really need the touch ID since I can use my watch for authentication anyway.