Yes you are right
All depend how much ram and CPU power you have installed in the MS.
IN the MS don't give a limits to hosting VST, we can open how many we like, here one small example: http://www.lionstracs.com/data/gui/vst.png http://www.lionstracs.com/store/vst-free-p-142.html http://www.lionstracs.com/store/msiso-14-p-152.html

About the styles under VST is a totally different stuff, it is possible of course but then need to remap the sounds styles under the VST opened. It mean that you have to change the Program change/Bank of each pattern to the right sound of the VST.
IF then you will recall this VST styles and you don't have run before the all VST setup used for this style, will NOT work.

For that we prefer use only GIGA sounds from the GigaLibrary folder because Linuxsampler is always RUN, will hosting the all GIGA sounds available.
In this way when you switch in realtime the styles you will always find the all sounds working.

Not well understand why Wersi still use the Cubase seq for hosting the VST and not another open VST host. I tough that under native Windows is possible open how many VST in realtime we like instead the MS use a emulation Windows under Wine support that is able to run up how many VST we want.
I'm NOT criticize the Wersi at all, I really like a lot this keyboard too and I know how much hard is developing OS with a closed windows source, where sometime is not possible fix bugs or limitation features because they don't have the OS souce code.

Try to understand our position too, we are a fresh company that in less 3 years we have developed all the software missing in one keyboard workstation. All the others brands have more than 20-30 years story and they can recycle/update the all stable embedded software for a new keyboard model.
Do not think that they have to remake always from scratch the software for make a new model, they have only to adapt the software to the new hardware.

If I like to make a new MS expander with small dimension, we have only to copy the MS OS in the new expander system and ignore the all hardware not used for this product. In 3 months I have developed the X-88 piano, this mean that if I like, I can develope in some months the expander too, BUT we recycle the all available software.

I think you have understand what I mean.