The whole concept of this dichotomy is pretty much groundless, if you ask me.

For one thing, it suggests that people who are verbally talented are not likely to be artistic, but research suggests otherwise.

"Rationalists" often have the most successful imaginations, incorporating what they know to come up with new models and explanations of how things work. These 'dreamers' you refer to are basically rationalists without the actual knowledge - just the ability to make up stuff that's probably irrelevant to reality.