As I've said elsewhere, these really aren't meant to be anything like ALPS, except insofar as their rectangular stem happens to be keycap compatible with ALPS rather than needing dedicated keycaps (like Kailh's equivalent switch).
The purpose of the rectangular stem is to have a stem that's the same shape and width as the opening in the housing all the way down, making it harder for debris or even liquids to get into the switches. In theory, this should improve the real-world longevity of the switches, especially for less-than-completely-tidy owners.