Is it ... is it worth buying for the keyboard alone?

If it's just the keyboard appearance itself piquing your interest, you might check out the Keychron K3 (the brand has apparently grown a lot since I was last shopping around for keyboards, so it looks like they have a "K", "K Pro", and "K QMK" as well as several other "[Insert Letter Here]" lines of models now... back then all they had were K keyboards).

To clarify, this is to say I'm looking on their website right now and seeing at least five variants of "K3" alone.

It's hard to tell when all the promotional photos are showing either a partial shot or an aggressive angle, but it looks so much like my K3 that I actually thought they were going to say they collaborated with Keychron on the design.

Definitely not.

Though it would be a decent standalone keyboard if they updated the 'Pi Keyboard' design (one of their oldest products) with this top case, and with a USB 3 hub integrated into it. Price would have to be in the sub-$100 range to be interesting, though.