Looks like mostly an Ethereum thing to start.
For me personally BSC is the easiest way to get Rune.

steps for LEO.

• wrap leo to bleo.
• dump bleo to bnb
• send bnb to trust wallet
• unwrap bnb to bep2
• trade bep2 bnb for Rune on thorchain.

so yeah quite a few roundabout steps,
but you can do this right now without even waiting.
or just buy on mandala
but sometimes buying native rune is cheaper than bep20 wrapped version.