Here's an update. The AT102W has sliders and -- unless rubber domes click with a metallic sound -- proper switches.
(Actually, these are switches embedded in a metal baseplate, I have verified.)
Now, for the bad part... The description is as mis-leading as is the picture. That, or some people's interpretation of "only requires a clean wipe" is badly flawed. The two that I got came with crumbs in between yellowed keys. I do not think these were lightly used as the seller claims; in fact, they look like they have been hammered 24/7 by programmers. Nothing that I could not clean with a bit of patience, but I certainly was not expecting that.
Now, is there any chance of restoring yellowed keycaps to their former white glory?