Oh, I just noticed that there is a CV Envelope Follower in CV Tools:
https://www.ableton.com/en/blog/cv-tools-live-coming-soon/
Besides the convenience of Ears (the tactile surface, the possibility of not having to go through the computer, the hands-on experience), what are its benefits? Will the analog/digital conversions of going through the computer have a negative effect in this regard as well?