I think its "retrofitable" but you just have to find a character that it will fit well on. Axe comes to mind, but you might be getting really close to garrosh levels of wildness.
Probably just as close as the armor and the beard goes, I also try to give him the axe, and most likely adjust his overall body proportions to fit his clothing.
The axes lack some imperfections. Like chipped away pieces of metal, scratches,... But appart from that they look good, I don't see any pinching or other weird stuff.
So this whole axe business has got me in low spirits but here's the sculpt of Robobobo's Slardar weapon concept (which you can check out in his thread):
Satan's Afro Crisis Radioactive Buddhist of the Dead Duke Nukem: Square Dancing Crusade Excruciating Axe Dance Party Death-Defying Deer Hunter Dynasty mmm. funs