I ordered 5oz on 5/16. Emailed them over the weekend, and got a response on Tuesday. They told me they are just catching up, and that they expect mine to be filled this week....I'd think yours would be along the same timeline.
I'd say it all depends on what you're looking for. When it comes to big box online retailers, smokingpipes and tobaccopipes are my tops. I've found that B&M retailers that have an online presence usually have more of the stuff I'm looking for (SG and G&H stuff mainly) - places like Boswell's...
I also have an old Peterson Stirling, with exactly the same band as you described with no hallmarks. Made in Ireland. I think I determined it was made 1945-1949. Excellent pipe for being such an old geezer.
I recently asked this same question. Seems like it's not sold as PS anymore, only Arango...but was/is made by PS. I ordered a 1oz sample to try, smoked 1 bowl, then ordered 8 more to jar up. Really good stuff.