[BoomerSooner]

This is coming from a guy that works in a state without a shot clock, so take it for what it worth, but my understanding is that there are a few reasons using the shot clock to determine a 10 second violation is discouraged.

1. Already mentioned - shot clock may not be started properly
2. Shot clock isn't inherently synchronized with the 10 second count at all times. Various circumstances could cause the 10 second count to be reset.
3. The most practical reason that I've heard, however, is that if an official is watching the shot clock, he/she isn't watching the action on the court. While a slow count can draw the ire of the defense, missing a foul or some other violation because the crew is looking at the shot clock would be worse especially if there is no 10 second violation. There is more often than not going to be action that requires our attention be on the court if there is the potential for a 10 second violation. I can count to 10 and watch the action at the same time, but I don't know that I could watch the action on the court and the shot clock at the same time.