A leuchtturm1917 notebook with pretty absorbent paper that soaks up the ink nicely. I switch paper though in meeting, so sometimes I will be using waxy coated paper e.g. 3M post-it notes, which I think is the main culprit clogging my pens. What do you think?

The notebook should be fine but I'd avoid the cheap paper, just to be sure. Which nib are you using? With a f nib I'd avoid it for sure.