Just joined the ATH Velour/Velvet pad replacement club!!!
I definitely prefer how the bass sounds more controlled. The lower mid warmth is largely gone, but the treble is definitely a little hot as Dsnuts pointed out. While I found the bass difficult to tame using EQ with the regular pads, pretty easy to reduce the treble with EQ when using these pads. I think I have some hobby store felt around. Might try that to see how it affects the audio signature.
After hearing these drivers in this new way, makes me wonder if JVC ever experimented with them with different enclosures and pads, or were they only focused on creating a portable phone with a bassy signature.