The DR system are fine, only 1 thing to be mindful about it, and that is if you plan to use parking guard, and use the G-sensor, then you have to mount the main unit to something rigid as shocks can travel thru the chassis to the main unit to be picked up.
My test sample are just draped over transmission tunnel in its wires, so i can kick wheels and slap windscreens as i please and nothing happen, but drop a matchstick on the main unit from a few CM up and it register just fine.
It is a design challenge all remote systems have, and i still think it is the best way to make dashcams, and i also use always record low bitrate, though i do have G-sensor on too, and it will also trigger just fine if my car is hit while parked, even with my sloppy "install"
Conventional systems are on the windscreen, so G-forses will easy reach those as glass are rigid glued to rest of the car.
I cant tell about this new system as i or any other tester dident get one, but judging by the countless other SG cameras i have had my hands on, you should be just fine.