My only concern would be that Volus are even more fragile than Quarians. They're stocky, short-limbed, and they breathe ammonia, and can only live in high-pressure atmospheres.
If I get a suit rip, I'm out for a few days due to infection, and am pumping myself with antibiotics like crazy.
If a volus gets a suit rip, they vent their life-giving ammonia, and the pressure difference kills them. It's do-able, but holy crap you'd need to be SO careful. There's a reason they're not a playable race in ME D: