Certainly! The CV module is for folks who don’t already have a USB MIDI-to-CV module (like the Hermod or FH-2).
The OP-Z, like the OP-1, constantly broadcasts MIDI output data over its USB cable. The OP-1 is misleading since it has a standalone MIDI mode, but the regular modes offer MIDI output as well. This means you can do stuff like plug it into the Hermod and sequence your Eurorack with the Tombola sequencer.
For the Hermod/OP-Z combo, the only oddity that I ran into last night was that OP-Z channels 1+2 were both sending out Hermod track 1, but then 3 came out of 2, 4 came out of 3. I need to find the time to sit down and figure out which device is misconfigured (or if there’s a bug), but in the meantime even with that hiccup it’s very easy to use the OP-Z to sequence eight tracks on the modular. Just plug the OP-Z into Hermod’s USB Host input and it should be good to go.