Yes, that is the one I have. Kerry sells it as a complete kit but I already had the K-Edge Go Big mount so Kerry (KLite) supplied only the 3D printed eTrex mounting plate.
Look closely at the second pic from the web site and you will see the K-Edge mount with the light attached to the GoPro mount via an adapter, and the 3D printed eTrex mounting plate sitting on top.
There is no question that the Klite kit is much brighter than the Beacon. Kerry also recommends you use a battery powered helmet light as well for low speed work. It comes down to what you need. I'm not an ultra endurance racer and don't often travel at night, so my light is really for better daytime visibility and the odd long day when I arrive late at my destination.
The KLite setup takes up a lot of bar space. My reason for choosing the Beacon is to reduce the clutter on my handlebars to leave more room to attach a handlebar roll, pocket and two chaff bags. All the webbing required to attach them takes up space and is slow and clumsy to attach when you have multiple mounts for lights and computers and a USB charger as well.
Here is my original setup to make space on the bars. It's an Exposure Revo (which does not have a switch), a KLite two-way switch and a Sinewave Revolution USB charger underneath the handlebar extension. It was still too cluttered for me when attaching the bags so when I saw the Sinewave Beacon I ordered one immediately.