OP ModelServer replaced by PlantSight?

Saw the recent coffee corner where checking out and referencing itwins was demonstrated.

Looks great. Does this mean that op model server is now redundant?

Also,  there was a brief mention of file versus itwin as the source of truth I think. What are the speed implications? I imagine most designers will be using files and synching to plantwise to avoid long loading times. Default for p&id?

But, most analytics or reporting tasks will be writing to plantwise as their main source of truth.

Presumably you can have both?