Purpose of fork with single bidon mount and no eyelets? I saw a fork that had a single bidon mount on each blade, midway down, and no eyelets on the dropouts. I don't understand the use of this. I was under the impression that any front rack would need an eyelet for mounting the bottom of the rack. Alternatively, a bottle cage needs a pair of mounts. So what's the function of this? Seems that there must be some other kind of mounting hardware. What is it?

Here's my representative sketch:
The mount is for pannier racks that sit low on your fork. In the absence of this mount I have seen a bracket used, but this is more secure. The rack also mounts using the front axle.