It actually does that, but a lot more. First, it *adds* 8 sounds, so you can have (if you wanted), L, R1, R2, R3 plus 8 more. I don't tend to use all 8 at once; I will add in 1 or 2 or 3 etc., and I can vary quickly as I go throughout a song. Also, you can split and layer any way you want. You can also set it so that a sound only comes in if you play with Velocity over 100 (for example) - great for "horn stabs"). You can freely modify/edit each of the 8 voices.
Then you can have 8 Registrations (on the V-Console) accessible immediately, with any combination of the 8 sounds - on your "upper" (right) and "lower" (left), and if you have an extra keyboard or MIDI pedalboard, you can assign sounds to that too. There are 16 banks of those 8 Registrations, for 128 total. (then you can load another file for another 128 etc. if you wanted to). For each of the 8 sounds, you can freely modify many things, such as overall Volume, split/layer, amount of Reverb/Chorus, amount of DSP, velocity response, EQ, filter, Attack, Release, etc. etc.
For me, I have some V-Console "registrations" on which no sounds are "on" yet; I add them as I want, on top of my existing Tyros registrations for a given song, as I play the song. Such as adding in a layer of "8va strings" or layering in a Glockenspiel for a chorus, then later layering Soft Horns to make my left-hands chords sound a bit fuller/different.
So, it adds the ability to layer and split 8 additional sounds, which you can quickly choose from (on or off) like you would on a pipe organ. I've only had it a couple of weeks, but one way I use it is to have various Registrations with whatever 8 sounds I want to add/layer ... on top of the Tyros Registrations that I already have and use.
So far, I have just created V-Console registrations for things like when I play a Classical piece, with 'appropriate' sounds to add and layer in. Another Reg. for jazz/standards, with various sounds I may want to add in. Another is for film score type music, another Reg. that I set up is for "Show tunes". Each has completely different sounds and settings, that I 'design' as ones that will work with songs of that genre. Another for ballads, another for pipe organ so I can add in various layers as I play a song. I have only had it a couple of weeks, so that's all I've created so far (wish I were retired and had more time!!)
-Jim