Same method as my previous videos on how to get the LOTE.
This time i tried without any Herbalist challenge completed.
It worked like a charm.

All other challenges done and finishing Gambler 10 while replaying the chapter 2 mission "Who is not without sin"
Make sure you finish that mission normaly!

So no need for that buggy trick to complete Herbalist 9, unless you want all reinforced equipment from the trapper and level 10 Dead Eye.

You will get the bonusses from the suit:
Cores
Decreases the speed at which all attribute cores (including horse cores) drain by 10%.

Damage
Decreases melee damage sustained by 10%.

Dead eye
Decreases the speed at which the Dead eye meter drains by 10% for three seconds (also applies to Eagle Eye, but permanently).

Attribute Experience
Increases the experience (XP) you obtain for all three attributes by 10%.

Horseback
Decreases the damage you receive while on horseback by 10%.

Loot
Increases money acquired by looting by 10%.

Weapons
Slows the degradation of all weapons by 10%.