Not a lot. I think Ghostery is best for ABP without NoScript. People that don't like to manually allow everything, but want to block tracking javascript easily

Not a lot. I think Ghostery is best for ABP without NoScript. People that don't like to manually allow everything, but want to block tracking javascript easily by default. Aside from that, it may add value in telling you which of those javascripts are for tracking. This is usually obvious, but not always. tl;dr: If you want a lean install, it probably is not necessary to add Ghostery to ABP+NS.