Hello, i can only speak of prusa multi material.
It is great if you want to print colors in same material, eg: 4xPLA. It will give you the best print quality without the problems of dual extruders.
But you only have 1 hotend, while i don’t know if it possible to mix materials, if so hotend will have to heat up and cooldown to match filament specs, this will delay your print and will not be good mixing them, because it will change alot of times (2 per layer when support is present).
Also before it change filament it need to clean old, meaning you will waste a bit of filament and time. If your print have big density and lot of supports you will waste tons of fillament
If you print alot with supports double hotend will best suit you, it can have different temperatures and is always ready to extrude. And the important thing is you don’t mix them
Hope that helps you