Well, I am using PETG, too. If the caddies do not sit in the cage overly tight, maybe it does not matter all that much. But still, the lattice would be a concern for me. Effectively leaving just two small spots at the edges that might snap easily under load when pulling out the caddy (sometimes you have to pull in the middle where the pattern is, at least I have to). Curious to hear about your results, though. What works, works.