In Batto-do do you spar often?

Let's put it this way, you don't need to draw your gun against a partner to practice your gun slinging technique. You can easily judge how fast a gunslinger you really are just by timing your movements. Since Battodo, like Iaido, focuses more on perfecting individual technique and form, there really is no need for a partner. You're either fast or you're slow, apply perfect form or bad form. Although it would be a nice change of pace if you face off against a partner, but it's not necessary.