Well there is a difference in store brands and stun pots :P
stun pots break stun with 5sec immune, 3 of them goes to waking up animation. brands make you immune for 1 min. I only pop a brand against burgs who annoy me greatly by zerging/jumping/kill stealing. Though that is on RARE occasions, I dont normaly use the store except for the fall immunity which is a game changer when someone tries to run away from you. I know that this isnt "honourable" but name one person on this game who havent tried either :P
Anyways, If a burg stunlocks someone from the beginning, except a brand, but you're a burg from 07(?) Im sure you can handle it
Using stun pots in a 1v1 is gay, and only really permissible, imo, if the other party is doing silly stuff as well. I mean, I would expect a melee class to use a pot in a 1v1 against me if I use armaments of storm, but that's really about it. As for store items, I somehow managed to make rank 10 without ever using them - so there's "one" person that hasn't tried either.
BTW Tingur - about your signature. If an RK hits you for 5k, that is because the RK got off an EC - if you let them get attuned enough to pop EC then you can plan on either avoiding it or on taking a big hit. It requires nine battle attunement, which take a lot of time to get to in a 1v1 if your opponent is skilled and you don't cheat and use an enamel. It also requires the RK to stop moving to cast, and if you are skillful in a 1v1 you can either break LOS, get behind the RK, pop a headshot stun, etc. when the RK tries to use it. With all due respect to Clown / Reject, allowing yourself to get owned by an RK's EC does reflect a lack of skill on your part. To say something to the contrary is basically to say that RKs are OP, which I do not think is the case (and my ridiculous number of deaths will attest to this). I do agree that RKs are difficult opponents for BAs at the moment if you allow the RK to get in range, but that does not by any means make us OP in general.