I think it should be an either or. for seller short breaks a holiday/vaccation notice clearly advising buyers that the seller is away for xxx days and will be unable to process sales and answer questions etc for that period. During this time the listings/stores can still be in view. For longer periods the option of a holiday / vaccation hold where the listings are removed from 'public view'. When the seller returns everything can be restored at the click of a button.
I know they had something similar on the other side, which removed the listings from view, and when a watched item that has been put on holiday hold was opened, a notice came to view instead of the item description advising the buyer / watcher that the seller is currently away. How it actually worked as a seller I couldn't say as I never used the facility there.
I hope this makes sense.