Keep in mind that sentences in a textbook are instructional; they are intended to highlight a language point more often than to present common speech. "See Spot run. Run, Spot, run." gets a message across to the intended audience. The word order fits the purpose.
I think of the Roman word order as practical: Who, what, where, when/how. The girl, the rocks, in the water, carries. From what I've read (little) some of it relfects Roman ordered thinking. However, what has been said here about the flexibility of word order is very true.