BuddyPress.org

To answer my own question, first:

	//Get friends Loop
	do_action( 'bp_before_activity_loop' );
	if ( bp_has_activities( bp_ajax_querystring( 'activity' )."&scope=friends") ) :
		$friends_activites = $activities_template->activities;
	endif;
	do_action( 'bp_after_activity_loop' ); 
	
	//Get personal Loop
	do_action( 'bp_before_activity_loop' );
	if ( bp_has_activities( bp_ajax_querystring( 'activity' )."&scope=just-me") ) :
		$personal_activites = $activities_template->activities; 
	endif;
	do_action( 'bp_after_activity_loop' ); 

Then:

$activities_template->activities = array_merge($personal_activites,$friends_activites);

Then loop:

		<?php while ( bp_activities() ) : bp_the_activity(); ?>

			<?php bp_get_template_part( 'activity/entry' ); ?>

		<?php endwhile; ?>

There might be a little I’m leaving out. If you view my profile and look at some of my forum activity you can probably find the whole code snippet. Too tired to post all of it.