I don't  agree with the capitalization. We use URI in uppercase in the interface everywhere: parseBitcoinURI, formatBitcoinURI, handleURIConnection, ... Uri is used nowhere at all.

As for getURI() / URI(), meh, Qt itself doesn't add `get` for properties either. Example: QLineEdit text() / setText(). But we do it in other places in the gui. Fine with me really.