Show always if admin?

Would it be possible to have the admin menu ALWAYS show at the top of the page if I’m logged in as the admin — even when I’m “browsing” the site rather than in active admin mode?

I used a plugin for Drupal that worked that way and it was VERY convenient being able to administer the site without having to go to the admin page first. (This plugin is already better than that one in most other ways.)