Well, if you are going to be investing mostly in US stocks, it is something to consider. Take this as an example of what can happen:
How I do: I convert in Revolut to USD, then I transfer to Transferwise, and then I add (via Debit Card) to T212. Few steps, but it takes me only 5 min and I know upfront how much I spent in my home currency. So far I have only invested in US stocks and it seemed better to have the account in USD.