So if you release this mode to the public, will that weapon pack also be able to be used outside of DayZ?
It will be a part of the mod so if you really wanted them you'd have to clip them out and make them yourself.
The guns would be high damage too so there wouldn't be much use for them if you instantly ripped them. But yes, you could say so, did I say it'd be released to the public? No. That might change later on, I'm confident nobody would host it properly because you basically need a very large map.
edit: I can't upload my brick pack to the RTB server so it'll take a bit before the server's up and running again.