Ok, typing this as I listen so it's a bit SoC. I think I'm picking up what you're describing. It's not that vocals are recessed, but rather some of the nuances in the texture/peaks are presented differently on the Elear, at least from the LCD-3 and Atticus (and I would imagine differently from the Clear by what you're saying). Whereas the vocals on Dire Straits' Brothers In Arms are distinct and forward on all three headphones (and actually best separated from the mix and most forward on the Elear), where the Atticus and especially the LCD-3 describes every ridge and trough in the voice, the Elear gives it a light gloss. The detail is still mostly there, but it's smoother, less 'grating'. If I stop concentrating just on the vocals and take in the track as a whole it's less noticeable, but it's definitely there. Same with Fleetwood Mac's 'Dreams' off the Rumours album. Vocals are the most forward and distinct on the Elear, but are also a touch smoother and less 'pitchy' compared to the LCD-3, which gives you every spick and speck on the recording, and the Atticus, which is somewhere in the middle. It's an interesting exercise actually, because when I pull back and take in the whole song, I notice a few things aside from the vocals. For example, the kick drums on the Elear really do have more punch than the LCD-3 or (surprisingly) the Atticus. The instruments are also more dynamic and 'closer' on the Elear, whereas one the LCD-3 they're part of a wider, more mesmerising web of sound that makes the LCD-3 what it is. Again the Atticus splits the difference while sounding warmer than either.
The one advantage of 'taking the edge' off some of the higher vocal ridges is the absolute lack of sibilance on the Elear. I can see why you'd appreciate the extra detail in the vocals, but should the vocals be any brighter or poorly recorded (try any Queen song off their Innuendo album for example), the Elear more than any other headphone I've heard presents the least sibilant and most enjoyable version of those songs, especially as you crank up the volume. I'm only guessing here, but would you agree that the Clear is a less forgiving headphone of poor (and sibilant) recordings than the Elear? That's certainly the case with the more neutral and resolving Auteur, so I can only think the same applies to the Clear. Oddly, the LCD-3 seems to always steer just to the safe side of the sibilance line, no matter how poor the recording, which probably speaks to the smoothness and linearity of its sound sig. The Clear, while possibly having an edge on the LCD-3's clarity given the responses above, likely does so at a cost - if you're particualrly sensitive to brightness/harshness.
So can the Elear's 'dip' ever be considered an advantage? Probably not if you're an objectivist seeking the final word in definition and clarity no matter the cost. That's why the Utopia exists. Probably yes if you prefer a slightly warmer, less fatiguing, and never sibilant sound, no matter how loud your turn up the volume.
The Clear, from what I've read and what I've learned from this little exercise, likely sits between the two Focals (duh!), being at the same time more resolving than the Elear but less so than the Utopia, but also less forgiving and more balanced across the spectrum than the Elear - which necessarily means less bass and more treble, with more detail in both but at the expense of less punch and a higher risk of harshness/sibilance on poorer recordings at higher volumes.