So far my experience has been smooth. I deposited a few tens of euros, converted them to bitcoin, and sent to my Phoenix wallet – all worked like magic for me. The fees are only a little bit higher than what Relai and Pocket offer (1.29% vs. 1.5%), but if you stack above €1k/months, the fee drops below 1%. Also, I found that Strike covers on-chain fees, so you can send bitcoin directly to cold storage.