As persuasive as they anecdotal may or may not be, I have seen no reporting to suggest people are resigning from service, nor have I seen any statistical information that suggests non-ob officers are resigning.
Put another way, the "friend of a friend" anecdote doesn't have much statistical value. The Pentagon is not bracing for a mass exodus of non-ob officers over this.
I can’t speak as to the other services, but the related Army policies and training specifically state that they will not make any special exceptions, allow breaking of any committments, etc. to allow soldiers to leave.
Due to the state of the economy, I highly doubt anyone will leave due to DADT repeal. Those that say that is their reason probably have another, less savory reason for getting out.
“The Pentagon is not bracing for a mass exodus of non-ob officers over this.”
Too early to tell, really, so your comments that no one is leaving are useless. I know people not enlisting and I know of people are planning on leaving. Only time will tell and any comments either way a premature.