It's interesting DMS (deleted?) and now Zeos (hinted in a VC unrelated vid) preferred the Eikon suede pads for the VC. Seems to contrast with pretty much every other impression/suggestion I've read/heard.
ok after a few hours with the Eikon suede pads, then an hour back on the universe pads, i think i have a handle on the basic sound. i won't go into deep detail as it's only a few hours. but here is what i was consistently hearing with the Eikon suede:
the Eikon suede (ES going forward) seemed to soften everything. leading edges and attack seemed a bit softer and more rounded. i kept envisioning a light curtain the sound was passing through. it wasn't significant, i could still pick out fine detail pretty easily, but it did give the VC a softer, more relaxed sound.
the ES flattened the frequency response overall. from subbass to mids to treble, it was pretty even across the board. if anything stood out, i'd have to say the treble. so a fairly flat response with a bit of a lift at the top.
the ES closed the soundstage noticeably vs the universe pads, which constrict the stage noticeably from the Auteur pads. you get the picture, a pretty closed and intimate stage, very forward and static. all sounds stayed close to my ears, with limited movement.
the ES made the VC very average sounding overall. it wan't bad at all, but it didn't stand out either. i could see how someone who dislikes the VC tuning with the Auteur pads might like this. it's a more generic but still technically capable sound. i personally would not use them vs the universe or Auteur pads, but just my preference.
some notes i jotted down on specific songs that really stood out to me as way off from the VC with universe pads:
David Bowie - Rock n Roll Suicide - the three dimensional stage collapsed. sounded very in my head. also, those wonderful mid bass drum hits were dull and lacking impact. made a very dynamic recording sound compressed.
Dire Straits - Money for Nothing - the drums sounded like hard plastic. very odd tonality overall, and treble was a bit fatiguing.
Fleetwood Mac - Golddust Woman - where did the drum impact go?!?!? i love the drums on this track, and now it was dull and compressed (see a pattern emerging?)
The Clash - Brand New Cadillac - guitar solo lacked bite, despite treble lift
Jimi Hendrix - All Along the Watchtower - this one threw me, guitar solo was too hot, unlike Brand New Cadillac. i had to turn down volume, it zinged me around 2:15 into track
The Doors - The End - lots of minute micro detail/plankton in this recording, but the ES made the plankton soft and indistinct.
The Cars - Lets Go - opening drums lacked impact. vocals a bit too forward due to treble lift.
Led Zeppelin - Over the Hills and Far Away - opening guitar work plankon/micro detail soft. with the universe pads you can really hear hands moving around the guitar's strings/neck, but with the ES pads, it was less resolved. also vocals were a touch hot here. ps - the opening guitar to start the track off is one of my most beloved tunes, just magical to me.
Well that's about all i have. my comments make it sounds bad, but honestly, it wasn't that that bad. but the ES pads take the best parts of the VC and temper them significantly. if someone is doing that, i honestly think the VC isnt' for them. they'd be better off saving some $ and going with another headphone. the closest thing i can think of to the VC with ES pads is the Eikon with lambskin stock pads, but less subbass.