I don't know how deep their pockets are, but Summit Media is mostly owned by former Heftel/HBC exec Carl Parmer and David DuBose, the GM of Cox's Birmingham cluster who was also a former station owner in Birmingham. From what I've read, some of the other GM's may have a small interest in Summit, too.
So, I wouldn't expect the culture to change a whole lot. DuBose has been firmly entrenched in the corporate culture at Cox since he sold his stations (WBHJ/WBHK) to them roughly 15 years ago. Of course, they'll have to make money with their properties, which means a format change or two can't be completely ruled out.