According to Wookieepedia's description of the Gungans:
Their technology was peculiar in that everything, from tools to structures is not constructed, but "grown", each device being therefore organically unique.
The Gungans' native technology, therefore, seems to be completely well-aligned and friendly to the Yuuzhan Vong's pro-organic, anti-inorganic culture. Do we know anything about the Yuuzhan Vong's actual perception of Gungans and their technological culture?