How out is "out" in your book?

[pellaz]

if they look like they would not understand, they probably will not. Dont wast your time with these people.

... Would a potential future partner be turned off about the lack of disclosure, or would he be more understanding?

Dont let anyone make you come out any further than you feel comfortable. Your new partner should know this. Rather he should work on your sense of comfort of who you are as a gay man.
Do you completely love your self?