I contacted Col Saguil about the time frame for receiving the unconditional letter. I was interviewed 10/25 and got the phone call around 11/23 (couple days before Thanksgiving). I received the conditional letter shortly after. When I talked with Col Saguil, he said the main holdup for the unconditional was the DODMERB form. I was medically cleared on Nov 19, and have yet to receive the uncondtional; however, Col Saguil told me earlier today that a batch of uncondtional letters will be sent out shortly (he asked Loretta if my letter is in that batch, but I haven't heard back yet).
I'm sure there have already been people who have received unconditionals (I know one poster mentioned it a couple pages back).
Either way, if you received the letter from DODMERB saying that you are medically qualified, you should be good to go. The security clearance is just a regular Maryland State background check, so there should not be any holdup there.