With all the hooplah, I went out to my local store in NYC and bought a Weller 12 to try for the first time ($19 pretax) this past Saturday.
My response to a potential shortage: who cares? Weller 12 (this guy's opinion only) is average at best. I'd have no problem using it to mix cocktails but probably wouldn't sip it neat anytime in the future. I ended up giving it to my gf for future baking projects - I caught her once using Lot B for a sweet potato pie!