Can you put Cold Affinity on Cragblade AoW?

Was wanting to use a dual bleed/frost curved sword build, listed here:

My main weapon is a Scavenger’s Occult Curved Sword (Seppuku), and my secondary weapon is a Bandit’s Blood Curved Sword (Cragblade). Is it possible for me to put the cold affinity on my bandit’s sword, instead of Blood? Doesn’t seem to show up after I apply the Cragblade AoW. Any other build advice appreciated btw