What advantages would a walking tikari, like a caterpillar, have over a flying one?

Size mostly, Varg’s centipede can become a broadsword and Balder’s caterpillar can become a hefty boomerang. They can crawl fast on any surface so they’re not all that much at a disadvantage, though antics ensue on Mars in Ragnarök for a while when the other tikaris have to carry Varg’s for a bit.