Joe,
You're right, forms and fighting in general are different (sometimes very different) in CLF. But if I am not mistaken, Tapani said something about sometimes having (or needing to, to execute something in a certain way) to leave yourself open under certain circumstances. I cannot recall exactly what he said, but I can think of something myself: if someone has longer legs than you and he quickly moves back after that kwa choy, then you kind of have to reach in with that pek choy in order to connect. Now, if this person is also a little taller than you (if he was a lot taller, a pek choy to the head or collar bone might not be the best thing to attempt), you would be even more open - for that split second - as you would be reaching not only forward but also a little upward.
In any case, this was just to illustrate how there are always trade-offs. What you said about the boxer holds true, but maybe he wouldn't be quite as open as the above mentioned guy with his pek choy because he is - once again, for a split second only - wide open (due to his going from left side forward to right side forward AND his left hand not having returned to guard quite yet). But if he does the same combo with shorter strikes, he's not really open at all, not at least the way I mean open here. Then it's another story altogether. But then he wouldn't have quite the same power, and if the kwa choy doesn't go through, the other guy might actually counter before the pek choy, so the whole combo is lost...or someone might slip, or maybe there's a front kick...
At any rate, fighting and forms are usually different in CLF as you said, but sometimes, especially since you have been doing everything in many ways, a "form-like" technique is in place. And sometimes it's not. Imagine the guy being successful with his kwa-pek...wheew...could be a devastating blow...with a lot of power.
No one was insulted, Joe
I was just trying say that Tapani has 12 years of Choy Lee Fut experience and has trained with some of the best around (Grandmaster Chan Yong-Fa, Sifu Mark Whelan, Sifu Barry, Sifu Lane, Sifus Markku and Martti Sipilä, etc.), so that you would know he was talking from his experience and not from having read books. And in any case, using these long-range techniques in a ring fight would be way out of the ordinary, that's absolutely true.
And I should really stop putting words to Tapani's mouth...
Peace
Mika