Along with all the other Lowdens I tried, I spent 30 minutes or so with a fan-fretted F35 nearly identical to the one I bought. I was surprised at how normal it actually felt. But I didn't want to go that 'weird' for my first (and maybe only) expensive acoustic.I was pleasantly surprised by how comfortable it was, and just how familiar the fanned fretboard felt. I was expecting it to be weird, but it wasn't.
This is a very important detail. There is no "standard" fan, the way there is a standard 24.75" and 25.5" scale. If it is a 7-string guitar, the fan will tend to be broader, to allow for more harmonic content in the lowest string, but there is no requirement that there be a huge fan. Indeed, a moderate fan on a shorter-scale neck with a reasonable number of frets (e.g., 21 not 24) may be the sort of thing one can barely feel.Ibanez has production fanned fret guitars and basses I believe. Ever since a couple big names in metal (Periphery comes immediately to mind) a few more people have been asking for them. It's still pretty niche though.
I like the idea of a small fan, but I haven't come across one to check out.