Just got the Moment case! It's pretty nice, although there are a couple of slight disadvantages compared to the Spigen Liquid Air: (1) it feels more slippery, since the sides lack the textured crosshatching that the Spigen has (and the back texture actually doesn't add much grippiness), and (2) the sides of the screen are less protected -- on the Spigen, the case is just about flush with the screen on the sides, while on the Moment, the lip of the case is below the screen (but the Moment still has the raised protective lip at the top and bottom).
These are only minor negatives, though, because overall the case is high quality. And, of course, it's compatible with the Moment lenses I have, which is the main reason I got one.
View attachment 338768
View attachment 338769