terp26
I have a question.....what if you do not want your intentions to be known at your job?
What if you apply to b-school and get declined? What if you get passed up for a promotion because you will be leaving or get fired because they rather get someone new to fill your spot up asap? I see this as more of a risk factor than a benefit, especially if you can explain this and be willing to provide a rec on condition of an offer?
I've heard from several schools (Stanford was one; I think Duke was another) that they understand that sometimes you can't share with your boss your b-school intentions.
I can't imagine any school being ok with you providing a rec upon offer - they just don't play that way. You follow their rules. However, if you can't get your boss, then it's up to you to get other recs that are meaningful. Possibilities: past supervisors, clients, someone else in your org you can confide in, etc. And, as above, if the rec you provide is outside their norms, then explain why - in a nondefensive way - in the optional essay.
That's my take on the issue, anyway.