I haven’t tried just P79 with P125, no. I used up all the P125 I had left making this and, given it was my first proper shot at compositing, jumped the gun a little and didn’t test it with each component separately 
On it’s own, P125 is quite energetic. It has an air of excitement to it that seemed to vanish in this mix and I’m suspecting TAC was the cause. Given the bonding elements of P125, in retrospect it probably didn’t need the TAC.
On another note- I am looking forward to seeing you report on P126… been waiting for you to get around to these 