Not to disagree with you being a poolie myself, but during the interview, they specifically said that if you have a type in something they try to put you in the same equipment. This came up when we asked how the decide who goes in what airplane. This was during lunch with Derinda and all the Big Wigs that stopped to say hi.
Don't disagree with him, he has been around for a while and has seen it happen time and time again. To re-iterate Flylow's point, they usually never place you in an aircraft you are typed in. Now, there are some cases where this has happened, but usually not. I do know that if you are typed in an aircraft NJA flies, it will benefit you.