Charles Hill wrote:
Don`t you think that the "odd foreign quirk" becomes a major problem when the other members continue to keep that person on the outside (soto) instead of bringing him/her in (uchi)? I have seen numerous times where a non-Japanese insists on doing things her/his own way in the dojo. The Japanese seem to accept it but then they seem to not take any personal responsibility/interest in that person`s progress.
Chuck's answer pretty much covers it, but I doubt if the behavior in question would be enough to actually get you ostracized unless you were fairly obnoxious in how you went about it. Basically speaking, foreigners usually get a lot more leeway in Japan than native Japanese do.