I don't know, if you look at the second 7Bit mx switch GB, it's pretty clear There is no stock of pretty much anything for switches right now (Especially PCB mounted). Not Unsurprisingly (and maybe why there is some IC for MX Green boards), the more rare switches (Green and White) have stock available directly from Cherry. Anyways if you want to check out how bad the shortage is, just check out the ETA dates in 7bit's Round 2 switch buy.
Cheers,