Yes, and neither is good news. Setting up offices is a cost, many firms will not bother, the fact some firms are setting up offices on either side means there is a trade barrier, trade barriers inhibit business, increase red tape and drive up costs.
We have a trade barrier between the UK and Europe where previously there was no barrier. There is a trade barrier between GB and NI where previously there was no barrier.
Either we are for trade barriers or we are not, so which is it? We seem to be celebrating the creation of them on one day and then celebrating the reduction of them the next.