"But Games Workshop just released a Sons of Horus Legion Praetor mini!" I hear you say. And you're right. They did. But this one's in terminator armor. Have yourselves a look.
From the post:
Hot on the heels of the Sons of Horus Legion Praetor comes his brother in even heavier armour – a Praetor in Terminator Armour, who’s ready to make the Age of Darkness that little bit darker.