Well let me start off by clarifying, first my background is in Tibetan White Crane regarding said techniques, so my understanding of the principles of application may be a bit different than a Choy Li Fut persons,.... since however I was taught in the 'one technique, one thousand applications' school of thought, I'm thinking style shouldn't matter at all.
I don't believe in the simplistic 'your way is wrong, my way is right' way of thinking,.... but I do believe in solid principles of application. As an example, in your form demonstration of kahp choi, you initiate the technique with a bin choi but seem to totally ignore its relevance application-wise; that bin choi is a limb destruction technique (read: not a pak sau slap that can be circled away from, a striking of the limb to make your opponent think twice about throwing that next jab.) The proper evasive (side stepping/angling) foot work and appropriate range/distancing is also important, which brings me to my second point: perhaps you have been able to use these techniques effectively in these fashions (kudos,.... seriously,) but I must confess to some bit of confusion on my part. You spent the whole video explaining how you have tried to fit these LONG ARM techniques into what you are clearly demonstrating to be SHORT RANGE scenarios. I know that Choy has short range techniques that are designed to be used effectively at that range,.... short pow choi,.... screw all the gung-fu for second,... fade to the outside and short boxers uppercut to the ribs! Sow choi is not the technique to use when your opponent is 'smothering' you.Yes I do- they work like I said, and I've sparred with them against all sorts of people. However, I'll bet you learned a different way that was the "right" way, and I'd love to hear about it.