Here is a great video on the EcoBoost.
The guy does a great job of talking about the good and the problems with this engine.
When this guy talks about this being a high performance engine he is a 100% correct. This engine needs to be thought of as pretty much a race engine. As mentioned, race engines need impeccable maintenance.
Another thing about this engine and engines like this. They don't have much duty cycle. That's why class 8 diesels have a big CID displacement in them. We can make big power with a little engine but when the weather turns hot and the mountains get steep you need that big mass to displace the heat the engine produces.
In short, if you are going to pound on this engine day in and day out up steep mountains in hot weather this engine is not for you IMHO.
If you are a weekend warrior and pull a trailer now and then in easy or moderate conditions this might be a great engine for you.