Qvm-open-in-dvm in application other than firefox

[fsflover]

Maybe this can help:

Polls: Do you use AEM, Whonix, VPNs, Split GPG, etc. in Qubes?

You do not need a replacement for that. You can use the original xdg-open with a “custom browser”, which just calls qvm-open-in-vm. Something like this: How do I change my default browser? - Ask Ubuntu. This is what I do to open all email links in a disposable VM.