Xbrick is an exchange wallet that you can store your coins safe and sound. Traders will enjoy a discount for Tx fees while trading if they have Xbrick token on their account. Having a secured trading platform like Xbrick will make us at ease about our digital money stored in it.
That is a big NO, Exchange wallet is never a safe place to store your coin, external cold wallets are still the preferred wallet to store your cryptocurrencies. Nothing is secured now a days , even banks get hacks and there were so many cases already of hacking on different exchanges, even the top ones. Let's learn to be more vigilant in storing our coins.
A friend of mine recommended MEW as I cannot afford external cold wallets. I think few months ago electrum wallets have been hacked and I need to update to a newer version. I was using electrum at that time. I believe that XBrick will be offering their own wallet and I hope that it will have a very good and secure feature.