I got a Vampire Hunter Eddie during the Immortal Souls event, and I've built him as a PVE loot grinder. Rather than 6 Assassin talismans, I'm using 3 Assassin and 3 Holy talismans to get the most damage out of Claim. It'll be a long while before I shard him up as my new Viking Eddie gets priority and I already have a fully-sharded Rainmaker.

My overall take so far is if you just want to max out straight damage, Rainmaker is better. However, there may be some potential with Vampire Hunter's revives from Rouse and Fury. Given how long it's gonna take to get shards for my Vampire Hunter, plus building up teams to experiment with him, I probably won't have any useful info on taking advantage of the revive effects until at least the end of June. Gives me something to work on, though.