I've been tossing around the idea of attempting to make an alchemy suit for pvp. The main hindrance I am running into at the moment is the lack of enhance pots on items (minus ecru citrine ring/alchy bauble). I looked into the augments, but I think the socket slots makes them prohibitive to use especially seeing that the alchemy calculations to increase enhance pot cap is a bit extreme from OSI.
At the moment, with 120 alchemy, we are capped out at 80% enhance potions. **Base cap of 50%, +10% EP cap per 33 alchemy**
Now, you can increase the cap, but it comes at the cost of 33 points of Alchemy per 10% increase in the cap. Assuming a person runs an ecru citrine ring (75% enhance pot), and alchy bauble (30% EP) you would already need to stack on another 82.5 alchemy which is only able to be done via socketing. I don't believe any gear actually has +alchemy on it. So in attempting to make a "battle alchemist" set, one would already need to use 17 sockets in a complete set to bump up your EP cap to 110%.
Now, if you are wanting to go even further, lets say you want to hit 150% EP cap.... One would have to hit 335 alchemy... to do that would require the use of 43 sockets just on alchemy augs. Then you would have to burn another 8 sockets just for the EP to be raised to 150%(since no +EP on gear other than alchy bauble).
Long story short.... My suggestion would be to reduce the socket slots of +10% EP to 1, and +25% EP to 2. This would be in an attempt to free up some valuable real estate in the socket slot department since going an alchemy route essentially eats a very large majority of your sockets to begin with just to raise the alchemy skill.