This is something I never noticed while I had my hands on the X-Pro 1 — maybe because I didn't use the EVF mode as much as the optical finder, or maybe because I wasn't in situations where exposure compensation was really called for. However, I'm by the water in the sun with the Olympus OM-D E-M5, and I noticed that I could easily see that the default metering was underexposing my subject — and that when I dialed in compensation, the effect was immediately visible in the EVF.
Does the X-Pro 1 do this too, and I just didn't notice? I'm new to the EVF world.