Following discussion with the tutors I decided to create gutters between the panels borders. This is cumbersome to do retrospectively. I have already done many of the drawings for (multiples of) and exact panel size. Manga/Clip Studio's processes seem entirely at odds with creating evenly sized gutters while ensuring the panels remain the same size. This is further complicated by the fact that I have already drawn all my panel borders at a particular thickness (13 point): this multiplies the complexity of keeping the gutters and panels equal sizes, because it's hard to accurately place a thick line over a guide.. I made a number of attempts and printed them out check them at actual size, and the gutters always looked uneven.The panel cutter tool won't work unless one has created the panel border, using the frame tool, but if you use this it hides your guidelines (even if you vary the layer order and transparency!} . It may be that when the panels are populated it will be less noticeable, but It would be even more of a headache to fix at that stage. It's another example of the numerous niggles with my upgrades from Manga Studio 4 - things don't work in an analogous way. I did spend some time creating a it's-not-perfect-but-it'll-have-to-do 6 panel template, but the gutters in this mean I have to to manually overdraw it when I need different permutations. My previous gutterless panels enabled me to incorporate the panel grid into each page, and just delete the lines I didn't need on that page. It really was a pain, but that's the first stage over with.
Versions of the same page with and without gutters, can be seen in Figures 2 and 3 of the post below 'Producing a Page'.
All original Images copyright Graham Johnstone, or, where applicable, their respective creators.