What concerns me is that it is getting a bit late to take the Eur/USD trade. I'm confident that the Euro will move still lower relative to the dollar, but I'm not at all confident in the time that will take. Time in the trade will, of course, affect yield. I liked this trade much better before Draghi announced that QE would begin, but when it was all but inevitable that the Germans would have to soften their stance. They were under tremendous pressure. Early entry benefited from lowered risk because of the strengthening dollar and clear intentions of the ECB not to let the Euro rise in the face of recession.
That said, the ECB has plans to continue QE through September 2016, in this first round of bond buying. I think the trade is still good, but I liked it better earlier.