My Bog Dog is 4 5/8" of blade length and the 3/8" it is missing to get to 5" is the difference in the mudder grip. If you measure from the ricasso forward I bet there is almost no difference between the Bog Dog and the Scrapper 5. The Bog Dog is one of the most under-rated Rats out there but I don't know of anyone that has one that doesn't love it. If the Scrapper 5 is similar it is a winner.

The square choil and the thumb ramp add some visual interest and I would say that the Scrapper 5 is more aesthetically pleasing than the Bog Dog. As for steel, my Bog Dog is D2 and I would guess that the 154CM, with the Busse heat treatment, would be excellent.