As far as I know, you aren't restricted with the tradable assets if you connect the account to the tradingview. It's just a kind of software, you know. The span of assets is the same, you can just use thos tools that are available for Tradingview chart.
Maybe some assets aren't available but I ain't heard of that, it's quite pointless to impose restrictions in case the company itself promotes trading using the Tradingview charting solution. You know, agreements between platforms and blah, blah, blah...