Why would you, I don't think it's a good idea because of the market volatility and trading fees this is risky you should study the advantage and the disadvantage honestly I have not thought of this and I guess no one will do this method.

I discourage taking a loan to invest, but I very much discourage this one there's no logic in this one, if you don't have an option and the market is doing great why not borrow fiat and invest in Bitcoin, much easier than doing this than what you're planning.