Qemu with spice usb redirect issue

Hi all, using qemu and virt-manager I have a very good working setup with nixos as host. I hit a bump redirecting yubikeys to the guest, but solved by adding spice-gtk to pkgs
and this ugliness:
security.wrappers.spice-client-glib-usb-acl-helper.source = "${pkgs.spice_gtk}/bin/spice-client-glib-usb-acl-helper";
(found here: [Create NixOS module for spice-gtk usb redirection · Issue #39618 · NixOS/nixpkgs · GitHub]) to my configuration.nix.

But redirecting USB storage does not currently work. For example redirecting a USB stick or SD card using the usb-redirect menu does not seem to make it available in the guest.

Any suggestions?

Any qemu users want to share your insights?