Sure, but there's "small" and then there's TOO small. With both Keith and Kaitlyn's work, they're used to working with larger modular systems, so you've got to approach that "small" with that point of scale in mind. Also, Kaitlyn's "small" is often something like her Buchla Sound Easel...physically small, but as far as capabilities, not small at all!
That being said, the Mantis pretty much IS the sort of "small" that's being tossed around there. 208 hp, fits in Tiptop's own gig bag, etc...ample room for the right sort of modules, but nowhere near the size of a big studio rig. Building up something along the general equivalency as an Easel in that sort of cab is pretty easy(ish), but in the previous skiff, that wasn't going to happen, mainly because the Buchla has loads of interconnectivity inside of it that isn't so apparent until you sit down with one. Eurorack modules are just not set up like that, so you've got to make sure you've got the room to compensate between "Buchla small" and "Eurorack small".