Just as title say, in config there's already this configuration:
"vanillaHandsSkipSwimming": true, "autoVanillaHands": [ ........ ],

But why not add configuration something like "skipVanillaHands": [ ... ]?

I use the mod with this configuration:
"vanillaHandsMode": "ALL" "vanillaHandsSkipSwimming": true
for me that's my sweet spot, I like vanilla camera but I still want the swimming camera and see my body in first person.

before that I tried to experiment with configuration, and I found that ewewukek's Musket mod works really well with this mod. I want the vanilla hands camera to get skipped when using these items. sadly, there's no configuration for something like skipVanillaHands.

Musket mod (3d models) without FirstPersonModel

Musket mod (3d models) with FirstPersonModel (See? The camera is soo much better for aiming/sniping using this mod)

Oh, and it turned out the camera when aiming with bow and crossbow looks much better too when using first person