@sinbad I've been using it for a little while on Linux. It works well! Since I have my university/work logins in one vault and personal logins in another, I can configure the agent to only prompt personal/work keys depending on the machine (or even the user on a machine!). I'm only using SSH keys: not for signing, just authentication on git/ssh servers and it fits my needs perfectly.
No idea how nice the experience is on Windows though 🤷♂️