As I said Puppy, it depends on the circumstance. In general I do not recommend it. If your kids are adult they may be more prepared to have that conversation.
Fear of what your kids could find out, well thats just it, it's fear. If they found out elsewhere I would hope they would come and ask you then and you can have an adult conversation about it. I also would add that if they find out elsewhere then your spouse cant just tell them mom and dad dont love each other anymore so it kind of eliminates that excuse.
What I will say is that it is not a recommended move as far as I am concerned or as far as Db is concerned either.
Puppy, I get why you exposed, your sitch. I do not however agree that it is okay to be pro-exposure with others on this site in general and using religious scripture to support it seems odd to me.