I think he plays best at that 95kg mark. That's where he started when he came over. He was pretty quick & moved well. And if he was back to that, he'd be a great #13 size.
The extra bulk has limited his lateral movement.
That said- he's also one of the few that we have that likes to come FORWARD to the runner of the ball, instead of waiting for them. Unfortunately, if the players either side of a defender coming forward don't ALSO come forward- you create gaps.
But, he's an Energiser bunny, tackles all day & doesn't do dumb stuff. I don't see why he isn't in the mix, if we contemplate Bird, Seyfarth, Sione, Pole or even Latu for #13.
He's not a ball player, of note, but he saves you're interchanges for other positions & gives you a 3rd prop essentially.