Most B&Ms traditionally either sold repackaged blends or else made blends comprised of other blends (i.e. two parts 1-Q, one part RLP, etc.). I don't know that anyone really cared about this until the Internet pretty much took over the pipe industry a few years ago. Also, some would buy Lane components (burley, latakia, etc) and then make their own mixtures. Lane even held contests to determine which B&Ms could come up with the best new blends using their tobaccos! Heck, my local B&M's best-selling blend for decades now has been a mixture of Lane's black cav and some burley. They even mix it up right in front of you!
I'd be surprised if Boswell repackaged anything, but I would NOT be surprised if I were to learn they used some Lane or PS components (which isn't the same thing at all, to my mind).
Personally, I couldn't care less unless it were a price issue (meaning that a local B&M was selling 1-Q at $60 a pound and wouldn't tell anyone where it came from out of fear that their customer would get it cheaper elsewhere). This whole debate is, I think, the result of contemporary "boutique" sensibilities coming into conflict with traditional large-scale marketing tactics. Since the explosion of "boutique" blends there's been a tremendous surge of interest in all aspects of tobacco production and "blending," with hundreds of us getting online and waxing poetic with reviews and such. All of a sudden, people care a LOT about the pedigree of the tobacco they're smoking. The first decade I smoked a pipe, I met VERY few who talked that way!
It's kind of like the difference between guys who like good ol' store bought beer versus those who live exclusively on microbrews. Twenty years ago, most pipe smokers (and beer drinkers) just picked up whatever tobacco/beverage they liked the most and moved on without worrying a whole lot about its pedigree. That certainly isn't the case now, as guys now seem to like drinking microbrews and smoking boutique blends. It's all part of the larger cultural trend against mass production and faceless industrialization versus small scale, "authentic" products.
I'm not dissing this trend -- I think it's a positive development, overall. But again, I just can't really get myself worked up because some B&M owner decides to label as his own what is in effect a "generic" product made specifically for the purpose of re-branding (heck even the name "1-Q" is NOT a proper blend name like "Haddo's Delight" or "Nightcap" -- it's a numerical designation for a product designed to be named something else for resale).
I'm perfectly happy buying generic toothpaste and potato chips labeled "Kroger" or "Walmart" (although they come from the same factories) without implying that the retailer is being dishonest....why should it be different for pipe tobacco?!?