yup, i myself have the yamaha nylon silent guitar, as well as a full size classical.
take note if you try to play the silent guitar in the classical position, you'll have the edge of the guitar ribcage poke into your rib.
thats cos the guitar ribcage is designed to be played with the guitar resting on your right leg, so it fits your body.
i say its a oversight or laziness on yamaha's side, as they can just do one for both the steel and classical guitar.
the neck profile of the yamaha is also much slimmer than traditional, tho its still as wide, making it much easier to play.
and with headphones on, it sounds beautiful.