Media is really for supporting the plant. It also allows you to water less often by holding moisture near the roots.
If you are happy to water every day and can find a way to support the plant then it can be done.
I've done it for a few months at a time to help rescue one with struggling roots, by just resting it in an empty pot.
Otherwise some people hang orchids I believe, or that's also where mounts come in. Mounts without any moss covering the roots are pretty like growing it bare root, people just use moss to stop the roots drying too fast in dry climates.
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