Using Onlykey webcrypt with a derived GPG key

SSH, OpenPGP, GPG
1

Hello,

I would like to know if it is possible one way or an other to use the “Onlykey webcrypt” tool with the derived GPG key from the OnlyKey instead of using the keys in the slot ECC1 and ECC2 ?

I would like to do this for Windows users which are not able to securely create some GPG keys on an air-gap to feed the ECC1 and ECC2 slots.
And are also not able to use the onlykey-gpg-agent on command line.

Best regards

    Henri GEIST