The only real issue with the VCM is that it is not the best mixer for use in making sauce. When it comes to making sauce, think of it as a giant Waring Blender, it exerts a lot of shear on the tomato which causes it to break down and release water, so you need to be very careful when mixing sauce in a VCM, but then the same is trus when mixing dough in a VCM too, 15-seconds can be the difference between a dough and a pudding.
Tom Lehmann/The Dough Doctor