Traitor Geneticist items - Mutator Pen / Radiation Grenades

[pizzatiger]

What if the mutator pen, rather than starting with three random bad mutations, let you instead load up any three researched mutations?
You discover hulk, immediately load it onto the pen rather than wait for injectors, and then go around gib-suplexing.

it works that way as SL Pyro describes it. like the sleepy pen, if you want to customize it, just empty out the preloaded stuff on some worthless lab monkey/staff assistant then load up your own mix.

The thing i don't get is....why spend money on the mutator pen if you still need to wait 50 hours to get the injector which you still need to load into the pen AND does the same thing except is slightly faster when injecting other people