To be fair the drill fence looks nice, and seems like a nice platform for having parts on for drilling. From an ergonomic standpoint it seems like a good fast and easy way to adjust a backstop, while I've used clamps and all that but at that point you're juggling. Plus, a lot of drill presses have an uneven cast bottom with ribs and what not, I hate fighting with getting a C-clamp under there and finding a good flat purchase. But once it's all setup I'm sure it does all about the same.
If you're needing a fence and are constantly resetting it, then I see the use of a quickly adjustable one.
That tube hole guide seems pretty handy. Used simple v-blocks and such for drill presses, and so of course it should work.
For many things, good ole Wood Scrap & C-Clamps would work. But if your doing some Drilling, Light Milling, for Accurcity, the Aluminium Fence would be better. Wood Swells and Contracts from moisture, can also Warp, so not Straight. With Aluminium you could also Weld on or Attach other Fixtures to it. Some are laser Etched with a Ruler. Just as there is other Accessoires for them. Just a personal choice. I have a Mill today, but I did light Machining on a Drill Press with a 6" Cross Slide Vice.
I need a Rotary Index Table for my Mill for a project Milling some Slots on a Radius for a CDI Stator to change a Bosch Points Stator to a Nippon Denso CDI Stator setup. In looking back at this Drill Press stuff, I just realized, my Drill Press Table turns. So if I 3D Print my Drilling Jig that holds the Stator with a Straight Edge on one side, I can just Clamp it against a Fence. The lenght of the Slots can vary. I have the Old Slots on Stator to line up the Distance.
On Bosch Points the Coil is mounted at a 45 Degree Angle, for the Nippon CDI the Yellow Coil is pointed at Zero or TDC.
I screw bits of steel angle to the sides of a drill press table so those ribs don't get in my way. I also prefer a piece of angle for the fence, but it has an annoying habit of being used in a project...