As a bass player I'm not familiar with the treble clef.
As a tuba player I have to be extremely familiar with both treble *and* bass clefs depending on what variety of ensemble I am performing with!
(Orchestra, Concert Wind Band, Big Band - always bass clef, concert pitch; Brass Band - Always treble clef transposed for the fundamental key of the instrument; Brass Quartet/Quintet/Sextet/etc. - Could be either, occasionally both in the same piece - depending on how sadistic the composer/arranger are!)