Do you have experience daily-driving it? Any prominent negatives?

I use it on an XA2, which is a bit of an older phone, but even there it runs fine. Sometimes the Android apps slow down and you have to relaunch the application layer, but that's just one click and takes about 5 seconds. That said, most Android apps run fine. All the enterprise stuff works great (Okta, MS Authenticator, Exchange etc.). Native Apps are a bit hit and miss but development is rather easy.

I'd say the biggest pain point is that Google Maps doesn't work because of the lack of Google Play Services. The missing Maps/Play Services also breaks apps that rely on the maps API. Most of them just fall back to not showing a map at all while the rest of the app functions normally, but it's still an inconvenience. For turn by turn navigation I switched to HERE Maps which works without problems.

i used to have a jolla and loved my sailfish phone ... until the phone died and i could fix it ...

sailfish itself was great though. admittedly the android compatibility layer really helped though