I got my first "Alps" board the other day, a Chicony 5181 with SMK Montery Blue switches. It was used, of course. When I got it the keys were almost all caked in some kind of yellow-orange filth and decades worth of what I hope were pet hairs and assorted garbage had collected under them. I removed all the keys, doused them with a flamethrower, gave them a spit shine with some hydrochloric acid, and attacked the keyboard with the fires of Mordor for a few further hours before deciding that it was ready for use.
On that note, I love this board. I have to say that I can't for the life of me wrap my head around the reasoning behind the bigass enter key and the short backspace; it just seems so stupid and pointless. Nonetheless, aside from that, I love this board. The keys are certainly no buckling springs, but they are the best non buckling springs I have ever used by far. Not that I've tested very many things - in fact I've only tried blue and brown Cherry switches, so that statement is a bit bald. In any event these switches put Cherry to shame. The click is just so much more... clicky. It's very pleasent.
However, there isn't a ton of information out there on Alps and Alps like switches, and what is out there is often contradictory and confusing. Are the SMK Montery swithes made by Alps? I've seen claims that they are not compatible, which would imply that they are not. Are they therefore fundementally different? Complicated Blue Alps switches are usually cited as being the "best" Alps switch out there (and unfortunately one of the rarest and most expensive by far). How do these switches compare?