Without a hitch?
I assume you didn't try to use an Xterm "cross-endian". Despite X having been developed in a world where both big and little endian systems were common, somehow Apple lost the recipe.
And I recall a problem with the calculator app. The Intel version muffed calculations made in the RPN variant of "programmer mode. No I don't recall the precise error, but I do recall checking it on Yosemite, quite some time after the switch, and it was still broken. Fortunately, I still have my HP-16.