Oh, I loved it. There's almost everything I love about DW - Simm!Master, Delgado!Master, and the Doctor comforting both of them... I've got a soft spot for scenes like that, and Delgado!Master being taken care of by the Doctor was beautiful.
I also like the comparison between Simm and Delgado, and their approach towards violence. They are so very different.
"Rassilon, they were both so young..." - that sentence is heartbreaking, especially considering what still awaits them.
But the beginning and the end are heart-warming, with Three/Delgado being so close... Yes, I really enjoyed it!