If the company gives me options to choose, for example:
1. Only fiat currency.
2. Only Bitcoin.
3. Split between fiat currency and Bitcoin.
I would like to choose option #3 as with this salary payment method, I will receive both fiat currency and bitcoin, that can help me to do two main things: having fiat currency for my spendings and having bitcoin for my Bitcoin portfolio as DCA accumulation.
With this option, I will not have problems of convert my fiat currency to bitcoin for DCA accumulation or convert bitcoin to fiat currency for spendings.
This is the choice that we all will agree with because it is very convenient and useful for us. But I guess this will never happen because paying employees in both fiat and bitcoin will cost the company more.
Paying salaries in bitcoin would cost businesses more because the price of bitcoin is constantly fluctuating and they would have to adjust their payroll every month. So to do that, they would need more dedicated staff or an automated conversion processor and this would incur additional costs. So they will never agree and implement this solution.