Honestly what kills me about the AEKs is the rotated top-row keys. You're stuck with them.
They’re great though.
If you put keycaps that tall on Alps switches rotated the normal way, they get very wobbly, but rotated 90° they still work great. Having them be so tall is of great practical advantage when actually using the keyboard.
I wish other producers of Alps keycaps would hop on the super-tall rotated F-row keycap bandwagon.
DCS and similar keycap profiles sometimes have an extra tall F row, but it’s not as extra tall as it should be. For example:
With the extra height of the Apple AEK caps, it would actually be quite practical to make a layout where the F row is very close to the number row, with maybe 1/4u gap (or even no gap, if you want) and still have the F row be usable. On most “75%” keyboards where there isn’t a gap between the number row and F row, the F row keys are basically unusable, because the number row is in the way. To press the F row keys you have to move your hands significantly more than you would with taller keycaps, in order to guarantee that you can press the key down without having your finger collide with the key in front.
For example, this layout is terrible with the keycaps being used in the picture: