I've been printing from within Capture One with some success but it's been a frustrating experience. Seems like every time I print, my settings go thru a randomizer. Especially when I first open the application.
First hearing about Epson's Print Layout here, I decided to give it a try a while back. Very easy to use but it was adding an extra step to my workflow.
Then today, knowing Capture One 12 accepted plug ins, I decided to see if I could use Epson Print Layout as one. Sure enough, I can! This completely streamlines and simplifies the process. Printing now is almost fun (except for the cost of the ink).
It works similar to other plug in apps. If I have a raw file, select "Edit With" and Capture One will create a TIFF file to be sent over to Epson Print Layout. If you already have a TIFF, then use "Open With" and Epson Print Layout will use the existing TIFF file.
(Using "Open With" on a RAW file will send the file without any existing edits. Using "Edit With" on a TIFF file will create a second TIFF file.)