Hello there. Thanks for the note. I have never gone through the NCCP coaching but I think that it would be really interesting and probably help greatly with your ability to fine tune students at an intermediate and advanced level.
As you know the NCCP would look at canoeing/kayaking from a competitive focus which could be very helpful in rounding out your teaching skills.
The only person I know who has worked their way up the NCCP and Paddle Canada programs is Doug Alderson from Skils. He is fairly high up in the NCCP Judo coaching program and is a Senior Instructor Trainer with Paddle Canada. Though not NCCP canoe/kayak coach, he can probably give a good perspective on the two different programs.
You can find his contact info on the Skils staff website
here.
Let us know what you decide to do and we would be interested in finding out what you turn up.