Arma 3 offers a feature to allow certain clients to join while using -filePatching via server cfg parameter definition: filePatchingExceptions[] = {"XXXXX"}; //Works with Steam64ID
It would be very useful to introduce this feature within DayZ, allows for more flexible options in terms of running scripts for server administration that requires client side code (UI / Layouts) Clients that are added to the exception list can load such data.

https://community.bistudio.com/wiki/server.cfg#Server_Administration