Alchemy / manufacture perks

Upon reaching 100% alchemy and / or manufacture, you gain bonus perks

Alchemy: 

25% more healing with pots

25% more mana with pots

25% longer effects of potions

Manufacture:

25% chance of not losing durability when using weapon/wand or from armor after being hit.

*another idea would be 25% more durability of any weapon/armor equiped (not sure if that's possible)