Well,
this thread had negated my need for my own case humidifiers.
However,
THIS thread resulted in me re-installing my case humidifiers.
At the peak of the storm, my new whole house humidifier was working overtime just to keep the house in the mid-thirties (%RH).
During that time, I reinstalled my gel-bead humidifiers in my cases. Interestingly these haven't dried out yet and the cases have stayed 45%-50% RH.
I also noticed these haven't over-humidified my cases, either.