Product review (3 stars): Just like the originals so far
I hope I'm not jinxing myself, but the filters seem to be "aging" the same as the originals. They fit just fine in the WeMo, and they sucked up the water as usual, no pre soaking. Hopefully they keep working! It's been three plus weeks so far, so keeping my fingers crossed.

Update: I jinxed it. All of a sudden today, 4 weeks in, the humidity is just steadily dropping.  And I can feel that the filters are half hardened. The app says they're only 54% used, but they're not going to last and may already be done.