Don't know if this thread is still active, but here it goes.
You spoke of a Vatican Funded Superntaural Bounty Hunter here's some ideas I came up with for clothing and accessories. You can maybe call your character something like Smite Saxon.
Some suggestions..
1) Some "Bounty/Wanted" posters with Vampires ,Weres , Demons etc like - " Wanted Dead for Demonic Possession and Murder of a Priest.
Reward - 5,000 Alms. You can make the poster on any art programme, print it out and dip the corners or splash cold tea on the paper aging it up.
2) A Rosary Bead Bull-Whip or Lasso, if in whip form have a crucifx as handle. Easily made by buying some beads and a length of string and attaching it to a wooden crucifix.
3) Create some kind of Exorcism and Execution Warrant complete with elaborate warrant badge crucifix , signed and sealed by a Vatican Official, that reads with something like - Empowered by God to be his wrath and his sword . Let no man stand in the way of sacred duty.
4 ) Keeping with the Vatican-Agent idea, create The Confessor - basically a Rosary Bead gun. Using a plastic bb gun or ball-shooting nerf gun ad colourize the balls for different purposes. Stringing some ammo together to form bondliers of different rosaries. Each colour could serve a purpose - Silver for Were , Hail Marys Metalic red are high explosive used for demons, clear glass filled with Holy Water. Green are anti-ectoplasm for Spectres and other entites etc.
5) A Oxblood leather duster if you can get one, in the backstory it could be made from flayed demon-skin, with maybe a hat to match.