Hi Spiceyokooko,
Sorry for the late reply to your original queries (I must of missed it somehow

)
I have made KD's GM recipe to spec and used it as specified in her recipes. Whilst I agree with you with regards to the level of coriander seeds and cumin seeds being quite high and unusual for a GM mix, the aromatics such as cloves cinnamon, nutmeg, cardamoms (green/black) still burst through and to me, give the dish a "pharmaceutical" note. That's just my opinion, and I would stress to anyone, try to make the dish to spec first before making any changes, whether they're recommended by me or others. Changing a published recipe before trying it, just because you don't like the look of it, is probably going to take you further away from what your taste buds prefer rather than closer to it...!
Khris is using her Garam Masala as a 'Spice Mix' in conjunction and alongside her other spicing and as part of the overall spicing of the dish. She's not using her Garam Masala in the conventional way - at the end of cooking.
Yes I agree and find it strange practise. As you say, GM is generally added at the end of the dish, added any earlier, usually results in the GM's pungency being reduced if included at the 'hard cooking' stage. Most of the ingredients in GM are a fair bit more expensive than the ingredients you would find in a 'curry masala', so why does Kris ask us to use GM, in the way we would use Curry Masala? To me, it doesn't make sense (in a restaurant environment anyway) and it does seem that Kris is attempting to give her dishes a flavour that you wouldn't have found in any of her restaurants?
Incidentally, if I ever do use GM in a dish these days, I always use Rajah Garam masala. For the tiny amounts that I use, it's not worth the effort to make up my own and to be fair, I can't see many BIR's going through the effort to make their own GM either (this is only speculation based on no evidence whatsoever)
Ray