Actually you can perfectly be Dragon and use a machine gun in-game. Factions are extremely open and are more about philosophy than weapons.
Selecting sword won't make you a Dragon. Each question has 3 answers; each answer gives you a point for a faction. Then the test results are based on the faction you got the more points in.
But some questions are on purpose misleading, and some factions sometimes have close answers.
For example both Illuminati and Dragon are not impressed by symbols but for very different reasons: Illuminati are disillusioned and cynical while the Dragon seeks the truth and the essence of things instead of relying on appearances.
Both Templars and Dragon believe in Mankind but Templars think Mankind
will necessarily prevail while the Dragon thinks that Mankind
can prevail if Mankind can restore
the Balance first.
Now, let me say it again: there is NO such thing as a Beta at the moment. The game is in pre-alpha condition. What FC is doing is creating a "buzz" and gathering a community large enough to be able to pick beta-testers from it when the time has come.
I'll tell you more some day soon, maybe on private sections of the forum BTW.
