Mines the opposite to that. I can play whatever bass, although I don't enjoy it if the string spacing is wide or if it has bits that dig in, or its too heavy, or there is some random piece of metal where I want to put my hand. However, if I am gigging, because I am also singing and playing keys with my feet, if the string spacing is wide, i WILL mess it up, because I don't have my attention on playing as I would have at home. For the same reason, I won't bother with a non 5 string, because I don't want to have to change basses when I am playing live, though obviously at home it doesn't make any difference