The difference with the potions is that you have to hit your hot-key 'after' you have been poisoned or need a heal pot. This makes all the difference in the world. If you can hold down a hotkey prior to being poisoned,etc, it is the same as running a looping razor macro (ie autocure) which is illegal in razor. Having to look and realize that you need a heal pot, or are poisoned creates a small delay which is a vital part of quality PVP. Otherwise there is no point in trying to poison people, for example.
The auto-refresh thing is another deal which preempts a small situational delay that would normally get you killed. If a macer hits you down to 0 stamina, you normally get stuck for a second, and often die.
Sallos looks like a great client to give a new updated feel to UO, but a shard can't have two competing clients with different PVP features. I wouldn't play a playstation version of a game to PVP with certain benefits, and then log onto another console to have other unique PVP benefits. And then worry about what console the other people I am seeing in-game have, so I can counter what they can do.