I think we're all overlooking one important aspect; guardians are basically a military force and our military forces (in the real world) use generic designed tactical gear, yes the formal uniforms can have male and female unique apparel, but guardians don't have formal uniforms we're always in our combat gear and combat gear like flightsuits and marine gear, even swat at the very least all use the same style and design for their armor whether it's male or female. I'm just saying this type of logic could very well carry over to destiny.