@contrex,
Yeah, you're right about useage, but it sounds redundant. Why not just say:
He's funny and intelligent.
Matthew's going to Egypt for a month, then he’s going to Greece for a couple of weeks.
When writing, consider both your topic and your audience.
The name Ann has many different spellings and also many diminutives.
At the minimum, there's a whole lot of unnecessary words in the "not only, but also" combo.
By the way, just curious: How many "diminutives" of the name Ann are there?