Hi,
Metatrader cant read data in metastock format

directly but you use some plugins to export data from a metatrader via DDE link to get it on metastock for real time analysis . Metatrader dont support connect to 3rd party vendor it can only allow chart and quotes from broker's server
Yes some broker's have stocks offered as CFDs you can use it on metatrader if you like hope it helps . GLGT