Hey orhto-mdmba,
I am current fourth year medical student enrolled in an MD/MBA program. Although I've obviously not been on the interview trial, I have found that the degree has been well received by most attendings at my home institution and away institutions during acting internships.
My long term goal is a leadership position in the orthopaedic surgery department of a university hospital.
I also have a lack of significant research experience. This seems to be a disadvantage in and of itself, but does not seem to be correlated to having the MBA. Since you WILL BE ASKED WHY you got the MBA, I would just construct a thoughtful reply to the question.
Please PM if you have any other questions.