Not much help, but I can tell you with confidence, if they have 32b's, he will get a 32b. If they only have 1.2's then he will get one of those.
If they have neither, he may end up with a slide. From what I read somewhere, tmobile recalled all the 1.2's in the stores so that they could use them for warranty/refurb purposes. I just got my 1.2 replaced with another 1.2, so they probably have a bunch of those in stock.
I don't have a source to quote on that info (may have been a random forum post)
Anyone can come in and feel free to correct me.