Jeff Layman laid this down on his screen :
Sure, if you've got all day because the filter slows things down. But then
again, maybe it would push all the fur off the filter with the reverse flow.

Our latest has its filter hinged to the lid, so it would hinge out of
the way when filled via the spout - unfortunately the outlet on our tap
is too big to properly fit the spout.

Lid is hinged, with a latch - you have slide the latch, to release the
lid to open.