I am happy to say that after using these pants a few times, both at home and Folsom Berlin, I am very glad with the quality and style.
The pants are not the tightest fit, meaning they do not necessarily hug your legs skin-tight, but I do not think that is the look they are going for with these anyway. Instead, I would even call these kinda "sporty" - at least when paired with black and white leather skating shoes. The pants close with a zipper, a button and a hook and especially the hook is robust. I'd say that's the most important part here, as even though they are not skin-tight, you want the waist to be as tight as possible - the leather will strech to accommodate you. This way the relatively high-waisted pants really conform to your waist, hip and butt. Indeed the legs on the pants are kind of long, which also gives off a looser fit as at least for me, they are a bit longer for me than my legs are. In other words, there is extra fabric there. I might like them to sit more straight, but to do that I can either flip the extra inside or have them tailored. Either way, not a biggie.
The leather is thick but not overly stiff, which I think is often a point people bring out that Riegillio leather clothes are quite ready for wear straight out of the shop. I like how it feels and how well I can move in them.
I really like the white stripe as an aesthetic! Paired with a white belt, white tie and the Riegillio leather jacket that has white shoulders and elbows, it both looks really well put together and stylistic, but also modern. It may not conform with more traditional style of leather wear, but I don't think it needs to. Instead I am happy Riegillio experiments with different looks so many people can find something they really like.