I'm pretty sure they screw you over, if I deposited 1k£ then snap withdrew 10 mins later I'd probs lose 5% with currency conversion.
I just called them up again, to see about depositing in £. They said my accounts set to dollars only, despite the fact I never asked for this at any point.
5% BOTH WAYS. I try to just do swaps to get money on there or talk to support to try to get a good deposit bonus.