Pan Gouache, anyone?

Someone just asked me if I'd tried Caran d'Ache Fancolor pan gouache paints...I haven't, have you?  Any input?  It says it's artist-grade paint...(you can click the link above to read the product information.)

Here's a similar set, with fewer colors, though it says it's from age 3 up...

Normally I squeeze tube gouache into my palette and let it dry to travel with--some brands re-wet better than others, and some want to crumble when dry, so of course I'm curious about these.

I've used Pelikan gouache like you see below, too, and although it's not as rich and saturated as artist grade gouache, it's still fun on toned paper...

So anyone have any hands-on experience I can share with Ruth?