Congrats all on your new cameras.
As for the PC4K vs UM4.6, the only advantage the Pocket has over the UM is a smaller size and BRaw codec (for this point in time anyway). Everything else, the UM has faster sensor readout times, even in full gate. I was a little disappointed in the slow sensor readout times on the new Pocket 4K.
The UM has a larger sensor, and a better cinematic IQ look to its images, yes the new PC4K can be made to closely match color and look, but still not quite as organic looking. So for Cine type work, I would go with the UM.
For straight video work, the PC4K is more than adequate. That said, I do prefer wiring with larger cameras, they have better initial stability and are easier to work with (unless you are trying to handhold one). The built in filters in the UM Pro and Broadcast are also a nice addition. I think the G2’s new filter correction is what would tip the scale to that camera for me, I like the look of images I am seeing from this camera, BMD is really getting the image fine tuned with this one.
Cheers