I got my MBA after my PharmD and its worked out pretty well for me afterwards in industry. It was paid for by my company and I wouldn't say that it was hugely useful in my progression/promotions but it certainly didn't hurt (and this is coming from someone in a commercial role).
Also, for all those talking about the "ROI" of a top-tier MBA, if you go into consulting or banking afterwards, you make a solid starting salary ($200k+ w/ bonus) with a nice sign on bonus, and many companies pay for your tuition for your second year if you're a returning summer intern. Money aside, the MBA at an M7 is a fantastic two year vacation with little pressure (grade non-disclosure to employers) and a ton of fun (20/30's classmates, money isn't a huge issue, a ton of partying/traveling)
I took the better "ROI" path of having my company pay for the MBA, but I certainly can't fault someone for taking the FT MBA route w/ a little less financial discipline but a lot more fun. The dollars will come if you're good at your job
Also, agree with everything JBrl has said - he is someone who actually comes from a white shoe firm rather than a bunch of students who have been most vocal in this thread ...