I like Bisq, I even liked Localbitcoins, but no, I was talking about non-platformed P2P.
So, with Bisq you've to run a software, with LBC alternatives you give up custody of your coins, you'd use both to protect yourself with escrow (in the case of Bisq a deposit guarantee).
My P2P is talking to an actual person, agreeing a rate of exchange. We send each other the respective coins. I understand I use this as a privilege of knowing certain traders for years. But yes, if you start on Bisq or an LBC alternative, I guess Binance P2P is an easy way to start, you'll build your own "web of trust" and eventually just ditch the platforms.
Ok this is another alternative to consider and perhaps develop. But it takes time to create that network of trusted P2P traders.
Maybe I was looking for something more immediate and direct but obviously with the best and acceptable security (at least what we can have).
As far as I know you can do atomic swaps for ETH and back, but atomic swaps are still considered to be unripe tech, so as far as security and reliability goes.... Who knows? If you want to stick to non-KYC exchanges I know Poloniex and Mexc are still somewhat semi non-KYC.
On which platform can you do atomic swaps between BTC and ETH? I couldn't find anything online (maybe I need to look into it further).
For the security concerns I understand are something new and not intesively tested but even on well-known CEX there could be security concerns and limits, I guess.