Are there any clip-on fenders that provide as full coverage as bolt-on fenders? Are there any clip-on non-eyelet fenders that provide as full coverage as bolt-on fenders?

I live in Seattle and am buying a new carbon commuting rain bike. Many of the high end bikes do not offer fender eyelets. On the other hand, there are many new carbon gravel bikes that do provide fender eyelets. I am curious how important of a factor is it to consider a bike with eyelets. I understand clip-on fenders are available for any bike. But I read online that some clip-on fenders have a gap in their coverage or stop halfway down the wheel. 

Are there any clip-on fenders that provide as full coverage as eyelet-installed fenders?
No. In fact the language most have settled on is "full coverage fender" instead of something like "bolt-on fender" for just this reason. Clip-on fenders and Raceblades/Speedez/etc offer a lot less coverage. In particular what they tend to not cover well are your face, your feet, and the bike.

There are various ways of making full fenders work on bikes that have the clearance for them but not the eyelets (this type has become my favorite), and also there's the "reacharound" installation style, which can be okay but is somewhat of a kludge.

Honestly it now more than ever makes absolutely no sense at all to buy a bike intended for rain commuting that can't take full fenders. The options just aren't limited like they used to be.