I haven't but i have heard that it's fiddly. I had two things in the cons column for Hobonichi: one was the paper and the other was the memo page (what would i use it for??). I doubt i'd like to use a cotton glove every day for the next five years when i write in it, which would be the best protection against hand oils. I usually use Pigma Micron or Uni Pin pens when i write in my journals and planners, so i think i'd be fine on that front.

Actually, when all things are taken into account, i'm leaning towards Leuchtturm. I've been using their notebooks for the past 4 years and they're amazing. One of the notebooks has been banging around my backpack for the past year and a half; it still looks good and the binding hasn't loosened.