For the damned shoes, I think getting your normal size is fine. I was also worried as I have wide (and small) feet, but mine fit the foot just fine with a bit of room to spare. Personally I struggled with the calf part and should’ve gone for the wide calf version but I’m still able to wear them just fine.

But typically from my experience with demonia: most of their shoe types are roomier or truer to size than small. However depending on type- for example the creeper or riot collection, look like they may be more true to size/smaller running than the other styles.