13th level Sacred Fist: Scraps vs Barovian wraps

[f_gamer]

Hi. I just got the scraps of enlightenment and comparing vs Barovian. Here's what I see:
Barovian - same damage due to reinforced fists on robe - addl undead damage, bypasses silver
Scraps - mythic boost+2, Says "Vorpal strikes bypass all fortification", unarmed boosted by 1/2 die (robe already grants this but if I ever change robe...)

Would scraps be the same, worse or better? Would they allow me to swap out improved crit bludgeoning for GTWF? I'd use wraps till at least level 15

Note:One guy on the monk forum suggested adamantine nuckles as well.