Well, it looks pretty and straight forward for a DIY project. How does it hold up is a good question. Only time will tell I guess.
Thanks for sharing, I may just try it...I always have plenty of scrap around.
I did notice that "Free Cobbled Wood Floor Installation Instructions" receipe called for a rubber based glue when others say you can use any old mastic (water based) glue. If you want your floor to last, I would stick with cobbled wood floors rubber based glue and forget the mastic. Do the floor right the first time and you will not have any problems in the future.