Ludi's creation style is that of rather "neutral" creations similer to the stock creatures otherwise found within the core game. However, these creations often have humorous descriptions, making up for their simpleness. He's also known for making mildly amusing adventures. I would not discourage anyone from not subbing him, he has good stuff for your game.
Ludi is also currently missing, at least from the game. He pops in on the Sporum every once in a while.