keep in mind separating Shinto and Buddhism was something that didn't really happen till latter on most samurai would have been a mixture of the too becuase you didn't say im Shinto or im Buddhist you said this is the way the world functions as much as the sun rising and setting its just a fact of life.

Also if you don't want to use tom of battle the oriental samurai is not bad Compared to a fighter) its got a better will save and more skill points and all it loses is one feat.