I also like the idea and it really gives him a good chance to see what he will be giving up. It will definitely put a strain on the relationship with the OW. To her, it will seem that he is moving closer back to his family and further out of her life. I think it will be harder for them to see each other on the days he has the kids himself. Also, I am thinking he would not introduce the kids to the OW- so there will be distance.
M38, H37 S3, S7 Together 15 yrs Married 8 yrs Bomb July 2008 Inhouse separation "I hate you" "We are over" (too many times to count) Reconciled Sept 2009 (still worth it)