Like others, I prefer the X-Pro 1 for its handling and its OVF. I started seriously looking at the X-Pro a few weeks before the announcement of the X-E1; I held off a few weeks to learn more, and thought I would wait for the X-E1 because of its size (I have smallish hands) and lower price. But because I found a great deal on a used X-Pro1, and the fact that I couldn't justify another EVF only camera (I am very happy with the VF2 for my digital Pens), I went for the X-Pro1. I have not regretted it. I was surprised by the handling; it is a little chunkier than my Leica M3 film camera, but handles just as well (and is actually lighter), and I prefer it's feel versus that of my X100.
Ironically, I shoot about half my photos using the EVF of the X-Pro1, but the OVF has become very useful for low-light situations capturing movement (e.g., dance) when the poor refresh rate of an EVF can become a hindrance. I switch to full manual focus, preset focus on key points where the action will take place, and track the action with the OVF. I've been very pleased.