Interesting. Two conflicting reports, but good topics.
FWC, how did you get the Amp numbers?
Yes, 10AH seems to be significant. In reality, not 10 hours, but from about 4pm to 10 am is 16 hours for us solar users who might be stuck in camper in bad weather. 16aH, or on a cloudy day it could be 24 aH and very little solar charging happening... Thus, the reasons for my interest to eek out every last wave of electrons...
For the daytime, when I am gone and just want vent to run, I would run it on absolute lowest possible speed, so less than half the speed of what the Low setting is, so yes, a computer fan would work too, but easier to put in the controller than wire in another fan and deal with it.
Keep in mind I have a DC fridge and the batts are already about 7 years old, so already running a clip fan all night is noticeable difference in voltage when I wake up. I want to avoid any deep discharge of the battery so I never go too low and I want batts to live as long as possible, yet I want to have the fan run when I want it.
I didnt know the FF has brushes, that's good to know if it ever stops.