My group has been playing IH for a while now, and we cut the Arcanist out totally. There are no spell-casting PCs allowed, and our viewpoint is that magic = demonic = bad. It's been a lot of fun not having spell casters (or magic items, also from the Abyss) to lean on; after playing a few campaigns with high level divine and arcane casters.
We haven't missed spell slingers at all. It's just sweat, blood, and the sound of battle.