Cadet - I think in general you are right, but there are two situations in which you might initiate contact, not always, but sometimes. One is where as Hearts Blessing has said, what you have been doing is now stuck, and you need to mix it up a bit [not recommended in the early stages - this is towards the end game].
The second is where initiating the contact is a real 180 for the LBS [it can be related to the first point.
