*If* it works as well as the Polarie, then it has two advantages from a price/specs point of view.. the first being that the polar scope is included in the base price. For the Polarie you have to fork out an arm and a leg extra for the polar scope. The other big advantage is that here you don't have to remove the camera etc to do the polar alignment. With the Polarie, the polar scope goes through the middle of the main bearing, which means you have to remove camera/tripod head to use it. Quite inconvenient, but then you don't even need the polar scope for a lot of the intended type of imaging work.
I can also vouch for the Polarie down to about -30C
..
Phil