This should have the warning about sending to smart contracts as ether outbounds have a strict 21k gas units limit.
https://thornode.ninerealms.com/thorchain/quote/swap?from_asset=BTC.BTC&to_asset=ETH.ETH&amount=1000000&destination=0x1c7b17362c84287bd1184447e6dfeaf920c31bbe&streaming_interval=10&streaming_quantity=10&tolerance_bps=10000&affiliate_bps=100&affiliate=t
The other way around has the warning
https://gitlab.com/search?search=21000&nav_source=navbar&project_id=13422983&group_id=5545144&search_code=true&repository_ref=develop