I was at the show.  Sam was in great form despite having to take breath-catching breaks.  The chemistry was there up the wazoo.  Having seen that trio so many times at Rivbea from 1974-76, it was especially poignant for me.  I did miss the extended percussion that Altschul had jettisoned by then, though.  None of the sirens, temple blocks, cowbells, etc., as far as I remember.