Yes. I don't train on the pro level, but I used to train at Seidokaikan in Nagoya but now live in Osaka and train at Sabakishindo, which is led by someone high up who broke off from Seidokaikan. You might not know Seidokaikan, but that's the same organization (or should I say, "company") as K1, both founded by Kazuyoshi Ishii. After Kazuyoshi Ishii went to prison for tax evasion he virtually disappeared from both organizations and I believe doesn't play an active role in anything now.

The training at Seidokaikan dojos throughout Japan have completely different training methods than anything you might see at private K1 dojos in Tokyo. It's basically sport karate, but it's a very strict atmosphere in terms of the protocol for etiquette. I think most Western fighters have problems training at Japanese dojos because they don't won't to be insanely polite all the time. Also, most Japanese men and women aren't that strong so if you're wanting to fight with your brute strength you'd get bored easily. I've seen many tournaments where the Western fighter wasn't that particularly good but creamed their Japanese opponents from sheer strength alone in the heavy weight divisions. But of course, the top level Japanese fighters are very good and completely different from the amateur majority.

I always suggest to Westerners that if they want to do martial arts here to first enjoy losing if you want to be shown special techniques. Be sure not to maim your partner in training and I would suggest not winning a trophy as your only goal. If you go to tournaments and win this or that trophy you might find yourself lonely at the top. The real beauty of martial arts training is when there's no competition at all except within yourself, when you learn deadly techniques and immerse yourself deep in Japanese culture. It's a whole new way of thinking and living...

('-')

...I don't imagine this mindset suits most fighters on this forum.