For those interested, this is my follow-up post to my original BR pants quandary.
I did keep the 2Ps, which fit like a glove right out of the box. After wearing them to lunch and one day in the office, they have sufficiently stretched out that I don't feel at all self-conscious about tightness across my bum. It's actually got a lot of give now! SO, lesson learned: if it fits like a glove out of the box, it'll be good by dinnertime :) And with these sales-on-sales, I stocked up on pants at $33-40 a pop!
[I feel like this crazy discounting is seriously diminishing their brand image. Am I just out of the loop and BR is no longer aiming to be a competitor to J.Crew / Club Monaco?]