Sure, why not?
You don't need the Internet's approval to try something new unless it might injure someone
Blender is a very powerful tool and learning to use it now will help using it in the future. Having more software experience can be very beneficial when the programs available outside of FIRST often are limited due to cost. The more you understand about the integration of various modeling programs (Inventer, SolidWorks, Maya, 3DS, Blender, Sketchup etc.), the more you will understand about working with different native data types.