Seems like the semi-windows-keys version with X/A switch is young enough that it can come with clones too.
The Windows key versions just used different clone switches. My theory is that OA2 clones were replaced with T1 somewhere around 1995, which is why I wanted to collect data about the switch types of compact Ortek (Ortek MKB-84 FX/Ortek MCB-84 FX) and Monterey (K110) keyboards as both series existed for years on either side of this boundary. It's looking like the OA2-era K110 keyboards used SMK switches instead, hence no-one ever finding a K110/MiniTouch/SunTouch Jr with OA2 switches, only SMK "Montereys" and T1.
Some companies offered real Alps vs clones as an option. It seems that FX model Orteks are Alps clone, while SX models are Alps SKCM and SKBM. Whether this was publicised as an option, I don't know.
Nan Tan (NTC) definitely advertised Alps and NTC switches as alternatives:
http://deskthority.net/photos-f62/old-ntc-brochure-t8359.htmlThere are no known NTC switches. We don't know if they were lying (Strong Man passed off any unbranded switch as theirs), or whether Nan Tan owned Himake (who seem to have made most of the clones), or whether some switches really weren't Himake after all.