I like the Regalia paper and concept. However, my storyboard arrived with the cardboard backing separated from the paper block.
Storyboard Standard Edition - Regalia Paper - Large
Pros: Fantastic sheen and shading with Sailor Ink. Good shading with Lamy ink. Zero bleed through. No feathering, No ghosting on other side. Gives a nice feedback while using F and M nibs.
Cons: Somehow, I felt, it draws too much ink. My Sailor HF writes like an M and my Pelikan F writes almost like B. would have preferred slightly more yellowish tinge on the paper.
Still prefer the Tomoe River paper, which used to be the staple for Endless. Maybe the option of TR paper should continue. The S series is possibly available commercially.
As others have stated as well, the paper is excellent and we need more sizes, at least something larger than A5, like B5 or A4!
I'd buy more if it was available as lose leaf, larger pads or in B5.