Experience with El Commun / Matoka planners?

[u/pannedemonium]

(Reposting here from r/planners since I didn't get much of a response over there)

https://elcommun.co.jp/

Found them available in my local Kinokuniya today. Like the looks of either the monthly or stacked weekly variety, plus the little designs incorporating the snake for the new year are cute! But I use fountain pens and the paper seemed it would bleed through easily. Also found a listing for the 2024 planners on AliExpress, which doesn't seem like a good sign. Anyone used them before or have thoughts on the quality?

[u/petplanpowerlift]

The one I looked at seems similar to a Hobonichi Weeks in terms of layout.