Although its durability is still very low compared to the Cryogenic Sleep Chamber, it is still quite decent considering it's just made of wood!
Vincent has been worrying about the durability of his weapons all this time.
Whenever he uses the cane with its Crush Attribute, its durability was also getting affected. This is why he would always try to use his Mana Arts during his battle.
This is to ensure that he won't be putting all the pressure on his weapon. This problem is actually mostly related to his powerful surge of Aura.
Since he's not a 3-Star Aura Knight yet, he still doesn't have the Aura Resonance skill that would allow him to ease the burden of the weapon he's wielding.
Of course, there is also an equivalent Tier 3 or Tier 4 Mana Arts to help him protect or repair the weapon but he obviously doesn't have an access to it.