Drush 6 works great of corse on a Drupal 6 website, but will I have all of the Drush 6 features when working on a Drupal 7 website? Should I use Drush 7 when working on a drupal 7 website?
I found this post that says you can switch between the two version easily, is this correct?
switch to drush6 command: composer global require drush/drush:6.*
switch to drush7 command: composer global require drush/drush:dev-master