Ok, this confuses me a bit again, lol. But to be honest I have a feeling I may consider Encore to be a bit veiled from the descriptions given so far.
Demo seems to be the only way to clarify my thoughts.
I have had 30 hours of listening with mine now ; I would say that they are not as prominent on the treble signature as my HD800s, however, when compared to my other IEMs (IE800s X10is) the treble is of a similar signature , i.e that the bass is more prominent and the treble is slightly more laid back.
There is plenty enough detail for my liking but I am more and more convinced you would prefer the Evokes. They have not as much bass emphasis and the treble has more emphasis. What you hear in the demo version of either phone will sound so much better through a CIEM version.