Yep - agree with Pratt here. The highs aren't forward and not harsh. Just emphasised (probably more apparent becuase of missing mid-bass). I was really surprised how detailed they were without being sibilant or harsh. And if anything is forward, it's the mids - forward, very warm and very nice.
Add some mid-bass and for me they would be a pretty good closed can. Sadly without it, they still sound 'off' / unatural.