I'm firmly against bowing in martial arts practiced outside of Asia, and really of the inclusion of a culture foreign to the practitioner in official training. I'm not racist, I just think it's a little dishonest to use another culture in this manner. Take, for example, a painter. Though he/she may paint in a fashion/with the same tools as were developed in a foreign land, they usually don't feel it necessary to act with that cultural mindset during the painting process. To be ignorant of the culture which birthed your art is, well, ignorant. But to feel compelled to live through this culture during training is pointless.