roger...you already gave away what you really want to do.
In your post above you state: "I expect I'll set up the X10 in much the same way."
In your heart you already bought the x10!
I researched everywhere about the x10 before I got it. In the end when i saw and handled it there was no doubt it was coming home with me. There is a lot to the camera, and I am no where near technical enough to complain about EXR or not. You will see some threads where when you want to use EXR modes then place the camera in M, instead of L resolution size. mainly I am in "A", or "S" priority all the time anyway.
Also, see the Fuji rumors on an maybe x100 size model with only EVF, the X-E1 or something like that to be announced.
Also, I have the Fuji case and it works great. I recently got the lens hood because you can screw in a 52 filter and I have a R72 and ND for my x pro and that way I can use it on both cameras. Put tape in the back over the vents for no light leaks.
I will take pics this weekend at the beach trying to produce more problems for the hec of it.