Size- I'm usually a 32x32. I got a 33x32 based on other reviews saying the khakis ran a little bit small. Right out of the dryer,they fit perfectly, as the day goes on, I'm glad I have a belt on.
To me, they are the perfect fit- not tight like skinny jeans, but not baggy and sloppy looking. They bunch up a little when I wear mid-top hiking boots, and I'd say a good half to quarter break with low top shoes. They fit nicely inside my rain boots. If you want to wear them outside of cowboy boots, I'd suggest the straight leg version.
Pretty comfortable, stretch just enough. I work as a low voltage electrician, so I move a lot on the job.
Cell phone pocket easily fits Pixel 2 with an OtterBox case. Should be no problem for any 5 or 5.5 screen phone.
Belt loops have no problem with my belt, theyd probably max out at 1 7/8" belt.
Can't speak to the durability yet, I'm hoping to get at least year and a half out of them.