Guys, I call myself the godfather of bmi (dan would agree I think), and just bumping into this thread, I saw something that I forewarned on dd.com (the main site).
Here the post that confirmed it:
nossif:
So I'm at the airport now at bwi, and told the check in abt the silver status, gave them my numbers, and even had a screenshot showing it as silver, but the guy said on his system it didn't say silver, and had to pay for baggage...anyone?
Unfortunately I was correct.
On another note, there is no problem opening a second acc, just make slight changes to address, email. and phone # and you will be ok.