I use Transferwise and have accounts in many currencies.
I have saved a stack of money this way. I am from the UK so GBP is my currency and it’s at historic lows compared to many others.
I hold EUR too and I am about to buy GBP back at a substantial profit. I bought EUR when 1 GBP = EUR 1.40.
I think currency trading is very risky, but it’s doable long term and it’s worthwhile for all Nomads to hold different currencies, partucularly USD,EUR,GBP and CHF.