I tried them at a certain point the first time I left proton. Featurewise they were great, but then they came out against Swiss privacy protections in a very concrete way which I felt was a bridge too far. Went back to proton, but infomaniak does not support email forwarding on free accounts so there was no way to migrate out. Luckily I wasn’t there long but did miss a few emails in the process. Which is to say, I would use your own domain name to make leaving easier or keep this in mind if you switch.