I'm a big fan of the original Dylusions Creative Journal so I decided to get this one too. Most of the time I like to work in smaller notebooks.
I find there is significant bleedthrough, so I can't really use the backs of the pages I do. So if I do a 2 page spread, the backs of both sides aren't really usable unless you don't plan on spraying ink on the back of the pages you've worked on, which has a high chance of ruining your work on the other side.
What I've been doing is using other paper (Bristol smooth 300 series) to do my things on then using washi tape (like if you were to insert pages back into the journal; a technique that Dyan Reaveley does) to insert in between the spread that has work done on either side so there's an extra page there even if it's not the same paper as the journal.
You can also use distress paint on the backs of the journal paper that has the bleedthrough from the other side.
I own a lot of the Dylusions rubber stamps, and the images can take up a lot of space on a page(s) because they are on the larger side.