I would say try it both ways and report back. My experience with the wireless outdoor camera has been pretty dismal. I don't think I ever got it to record anything other than a recording initiated by me with the card in either place. Now, the camera doesn't detect motion unless I wave my hand right in front of the lens, so it's definitely not recording anything. I did note that I couldn't set up a timelapse recording unless the card was in the camera which is pretty annoying since I'm not going out to the camera to retrieve the card when I want to view it and there's no way to view it without removing the card. I don't know if my camera is defective or not, but I haven 't had the time to explore all of its shortcomings and there seem to be many.
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.