[Plugin: BuddyPress Group Forum Extras] Signatures on activity updates & comments?

Hi, I LOVE what this plugin offers, but I was wondering if there was a way to make the signatures appear below activity updates and comments. I don’t use the forums, only the activity stream and I’d really like to offer this feature on my site. Thanks in advance.

http://wordpress.org/extend/plugins/buddypress-group-forum-extras/