Truth be told, the Edge Tamers are a specific product for a specific customer:
A customer that wants to use his factory loader/bucket, because they have either neither the money nor the space for a different attachment.
If OP is even remotely handy with a welder, there are plenty of "ideas" floating around on the internet that emulate what the Edge Tamers do, while having fancy options such as a quick on/off feature. They would also cost a little fortune to get made in a welding shop. Not too bad price-wise for someone like me running commercially, but far beyond the very reasonable $75ish that R2 charges for a pair for someone who does their own driveway exclusively.