Thanks for starting this discussion beatrice. Good topic!
I do think that every situation is different, though I think that the LBS level of detachment and setting boundries are more important than the relationship with the OW.
If the fear of losing the WS keeps you from setting and maintaining your boundries a reconciliation is doomed IMO.
Personally, I have a long way to go before my boundries are strong enough to survive a reconciliation. Not really an issue for me right now though. H is not interested in coming home.