Good questions Thomas. I'm sure you will get many different answers as hiking styles vary but this should stimulate some good discussion to benefit all.
The first answer depends on the season. In summer, I hike in low cut, mesh trail runners with low cut, thin wool socks and I trudge right through the water without a second thought.
In cold weather, I wear mid-cut, gore-tex shoes with crew top, thick, wool socks. At stream crossings, I take off the shoes and socks, and switch to my crocs.
They also double as a camp shoe if the weather is dry, but not worth the weight for just that purpose.
As to the second question, I pack my tent inside my backpack. Mind you, I go out for only a night or two, so I can properly take care of my tent at home. An extended or thru hike might be different.
My reasoning for packing it inside is that my tent is one of the heavier items I'm carrying so, I want as much weight as possible located against my back, near my center of gravity. Also, I want to compress my load, both to accomplish the first reason and to make the load more stable.
This method works for me because I keep everything that should be dry in dry sacks. Therefore, there is no migration of water.