Usually, i don't trust in multi-currency wallets. I don't feel that safe if my wallet connects to centralized servers managed by a single entity.  I always prefer manage my crypto savings in their official clients.
Today, i decided to install TrustWallet as it becomes one of the most known wallet after being sold to binance. After a short experience, i was looking for an official ANN thread to ask about few things but found none. This is why i create this topic.

I read somewhere that TrustWallet user has access to the private keys of each coin supported by the wallet. It was required to save a twelve word seed at first creating the wallet, but i didn't find here to find my private keys for eth and bitcoin.
I was surprised that trustwallet supports bech32 addresses but i can't find where to change the receiving address.
In the exchange menu, i was looking to exchange my deposit in eth to btc. I didn't find available eth/btc pairs available. Seems that eth exchange is only available to be exchanged with ERC20 tokens supported by the wallet.