I've been using X-Pro 1 for almost a year now. My other camera is a Canon 5D MkII. The sensor and the size of the complete kit were the main reasons to buy for me.

But of course after I bought, I realized, how hard it is to focus compared to 5D (it might be a silly comparison but that's what I'm used to). Basically, it's harder to auto focus, and you generally miss far more shots because of focus speed or just plain missed focus.

As for your question, the whole focusing became better after the firmware update, auto focus is fast enough that I can realize the difference, and maybe more importantly they made the manual focusing much better. Previously it was almost impossible to manually focus because of the amount that you need to turn the focusing ring. They made the whole range tighter, so no need to turn the ring that much anymore.

I can't compare the difference between OM-D and X-Pro 1, but I can definitely say that you still need to accept the fact that X-Pro 1 is not a complete camera. You should be willing to live with the focusing issues, mostly JPEG outputs, etc. If you're willing to accept these, I can tell that focusing issues are easier to swallow after the firmware update.