That is the point of playing Mechanicum character. You can whip out a binary translator and discuss tech-heresy without anyone noticing.
Shhh, don't tell the magos, we're being sneaky. Though, from my understanding, lingua-technis is purely SUPER ADVANCED binary chatter, and the cant mechanis is a spoken form that blends the human tongue, with the machine. It's pretty much unspeakable outside of the mechanicus, because mechanicus members have jaws and throats altered to speak shit only a cogitor should speak.