Pffft, I pretty much can't hear cymbals in a full mix. Generally I can hear the cymbals in a full solo'd drum bus mix fairly well. If I send my collaborators a mix where I can really hear the cymbals the way I like I'm sure you can imagine what they say. "Turn the frackin' cymbals down!!!!"
Did some online tests and it appears I really start to lose it 6KHz and above. So I really rely on my ability to just barely hear the cymbals in a solo'd drum bus mix and I am usually not told very bad things about the cymbals in a mix.