well I'm a tall/big guy in general so the weight of the shoe doesn't bother me, but for a smaller guy it could be annoying. Nothing wrong with the Rogue Do-wins IMO, still one of the greatest shoes ever made.
On the size system, yeah it's a bit shitty. I rounded up (size 45 instead of 44) and it was too big, and now I can't return it because it's been two weeks and I totally forgot about it... my fault but son of a bitch. Off to ebay you go.