Yes, I think it’s the same as with other bank transfers. I don’t remember whether I’ve tried same-day transfers to Revolut (in the morning when many Swiss banks offer this).
True, it’s not ideal but I simply look at it as holding a small part of my emergency fund at Revolut. That way I can use Revolut also when my bank cards are not working for some reason.
SIX will be introducing instant payments from 2024, which will hopefully eliminate this issue.