I've been doing the Royal Court near daily for about 4 months now and I love it. You'd be hard pressed to find a better set of exercises for martial arts than hindu pushups, hindu squats, and bridging. Not to mention the wonderful supplementary exercises!
I think Matt remains a controversial figure because he puts out some products with questionable presentation quality followed by questionable marketing. But Combat Conditioning itself is pure gold and Matt seems to be a gifted grappler with a true talent for putting together exercises that help strengthen you, stretch you out, and restore a great deal of energy in your spine!
As for results I've never been leaner, more flexible, or stronger (this is big to do with the NW though). Combat Conditioning itself is best for endurance/flexibility, so you might want to add a strength element (like the NW) to it after a while. CC for now is good though.
Biggest thing about CC is to work up to the hindu squats, and keep your heels flat for starters. This will take care of knee issues that people shun CC for. Buy the revised edition, btw, because it explains this stuff. Also do the wall sit for about a minute after each workout, supplementing some of the hindus to save those knees.
I do fifteen minutes of CC every day (per matt's suggestion) but some people like to do it 3 times a week if they lift weights on the other days. I find daily training to be better. just do a new CC each day if you want, or cycle a few of your favorites. Doing as much as you can do in each set of the 250 pushups workout 3 times a week would be enough to get into better "combat condition" than most.
And to answer your question about the hindu pushup, after you reach upward dog (look it up if you need to) you push directly into downward dog. going through the same groove back up would be a divebomber (although tis good to throw those in once the hindu pushups become manageable). doing a Ashtanga yoga class with an instructor who knows how to do the hindu pushup sequence (and the ouija breath) will teach your more than I could regarding the hindu pushup. thats how I learned but for now keep those elbows in real close to your side, arms much more narrow than you think.
Overall rest assured that combat conditoning is a great program that will go a long way towards increasing your flexibility, endurance (lung power), balance, strength, mood and (especially) regularity in your digestive tract. It works the body from the inside out! no joke! since its basically cracked out yoga
I can wall walk down and back up the side of SUV's, hold a wrestler's bridge for more than a minute, and do a gluttonous amount of Hindu pushups now. None of which could i do 4 months ago.
My biggest advice about combat conditioning is to "unlock " the supplementary exercises after a month of hitting the royal court pretty hard. Throw the wall sit in immediately even though its supplementary. Then just make up your own workouts for fifteen minutes each day. Write a little routine down (with 3 or five exercises from CC) and then do it and see how it goes! save the good ones and have fun. CC isn't weights or nothing like that. You'll recover much faster than you think, especially with daily training, but you might wanna start out with a day of rest in between for the first couple weeks (also matt's suggestion).
also, getting, or using, a Bosu ball for starting out bridging would be a great idea if you're currently too tight to do a wrestler's bridge safely. just relax your back onto the ball and eventually get to that bridge over a couple months.
doing this daily (videos below), or on the days when you don't do combat conditioning, would be great for you with almost no added recovery time!
(combat stretching video 1)
I haven't tried the other video's beside the first one for dynamic stretching, but its great let me tell you
Good luck and please feel free to ask any more Combat conditioning questions. As a martial artist you picked a great program!
also you can check this out for more tips and CC workouts if you needs be
(Beginner) Naked Warrior and Combat Conditioning