Show mirrored Columns on Kanban Cards

I am super happy about the new flexible Kanban cards!
However I am using a Kanban with a client to quickly view statuses and necessary information via mirrored information that are relevant to the client. Leaving all irrelevant information on our team board.

The title already says everything. It would be great to include the mirrored columns in the selection to display on the cards.
Thus far we have to use extra columns in the client board which have to be manually matched to the hidden mirrored columns.

Hope I did not confuse.
Best regards!