The perfect shape and fit, beautiful attention to detail and the garment-dyed colour of these is flipping gorgeous.
About the sizing:
I have a LOT of Decade pants including the overalls which I got in a Large for a very oversized fit and I love them. I wear Bonnie's in a 32 and they're snug but comfy. I got the ash utility pants in 32 and they're probably too big but i still wear 'em.
I measured at a 32 so that's what I ordered on the Kit trousers and they looked almost comically large. I'd watched and rewatched Molly's fit videos but I still managed to get this wrong. I returned and got the 30 and they're perfect for what I wanted. Lots of positive ease (space between garment and body) that looks intentional, with great shape. I could have sized down further for a more snug fit all over, but i like the slightly looser fit these days.
My measurements were at 31 waist and 41 hip when I purchased these so I think I'd have to advise that you size down by at last one and maybe 2 if you want the more snug overall fit.