yes clients will autodownload it keep in mind that the server is pure only
clients need the pk3 for sounds (HQ announcements) and textures (the transparent river textures)
you can move caen2.script to nitmod's mapscript directory and remove it from the pk3 if you want to keep it for yourself
add the mapscriptDir in your nitmod.cfg
if you want to use the mapscript only without the pk3 it will work except sounds for HQ annoucements when a teams capture the city flag, and of course the alternate river textures
you can edit the mapscript to remove the MG in axis spawn road (pointed against allies) or remove the allies door from the objective upper entrance or remove the alternate tank skin
search functions like this syntax
//scriptname
create
{
}
this is an etpro function (supported by all modern mods) , etmain will not recognise "create" and the server will crash if you put the pk3 in /etmain