Session-specific?

Hi,

I'm thinking about using the Advanced Theme Switcher. I'd like to use it to showcase the available themes to use on my website, and allow visitors to preview what the site would look like using the desired theme. However, I want to be sure that this is session specific - if a visitor changes the theme I only want it to affect their session, and not another user's session. Is this how the plugin works?

Thanks,
Mike