They did try and fell very short of pulling it off.
Robbie was a tight drummer, technically brilliant, but all session guys are. Any listener could tell it wasn't Reni on those live recordings though, it's too straight and sterile. The songs just don't work as well as they do when it's the guy who laid those grooves down in the studio who also is a natural and wonderfully gifted player.
Ian's drummer at Glasto 2005 was the same, better than Robbie mind but still very conservative playing.