If you need a Segwit wallet for low-fee transactions, I suggest you consider Green Address:
https://greenaddress.it/en/Or Electrum.
coins.ph
I do not recommend using exchange wallets for storing bitcoins. Neither would I suggest using coins.ph which is an exchange wallet with private keys controlled and withheld by the exchange. They do not disclose the keys to their customers.
KYC procedures are mandatory and there are unforeseeable risks which can happen anytime. An example of such risks is the exchange's systems going through maintenance checks which often leads to wallets being inaccessible (not good when you need your coins urgently). Another example is the widespread practice of locking accounts or blocking access to crypto assets unless and until the customer is KYC compliant. This can be a painstakingly long process.
Another risky situation is when an exchange delays withdrawals, despite cleared positive funds on the wallet.
To avoid any of these scenarios, use a wallet you and you alone totally and fully control. By that I mean the private keys or recovery seeds are known and controlled by you alone.
