Harbor Freight sells a set of leatherworking tools--an adjustable edge groover, an edge beveler, and an adjustable V gouge.
I've never used a V gouge, and I don't really have a need for one. I was eventually able to make a gouge, but it is very difficult to control. It feels like the tool needs to be sharpened to work well, and needs too much pressure to make guiding it easy. However, it is entirely possible I don't know what I'm doing, and am using this tool completely wrong. There were no instructions for any of these tools.
Although the quality of the Tandy tools is functional rather than outstanding, it is far, far better than the Harbor Freight equivalents.