don’t take my word for it, here, have some data:
if you look at the experiments done in this post, you’ll see that 4" omni wheels have the best traction on both polycarbonate and foam tiles, while 4" traction wheels actually have the worst traction on both materials over any other wheel type.
Results like these are why it’s important to make your decisions based on data and experience over simply intuition. While traction wheels sound like they’d have a lot of traction, in reality they’re the worst. And the slippery sideways nature of omni wheels might lead you to think they have bad forward traction, but actually they’re the best.