Suppose you play 2/1. You are in GF and found a fit in suit A.
Your partner showed already suit B. Not sure if it matters but assume suit A is a major suit.
You have made a slam try bid or your partner started a slam try bid to which you decided to cooperate.
In general , your Q-bids style is that you Q-bid up the line 1st or 2nd round control as long as you did not find a suit in which you lack 1st or 2nd round control.
Playing "LTTC" convention or not is irrelevant I think for the purpose of this pole.
No doubt you will Q-bid Ace or King in suit B of partner.
Suppose that in partner's suit you hold Qxx or Qx or Q singleton. With any of those holdings will you Q-bid his suit?
How about holding singleton or void in partner's suit. With any of those holdings will you Q-bid his suit?
Plus... it's free!