It will work for a OBW, but some of the blocks are going to have sharp corners / edges. That's okay, you just have to be extra careful and precise when cutting and piecing because any triangles that are slightly off of the others will stick out more on those blocks.
I think with this one you're mostly going to have light and dark blocks in the same color palette, since pattern is so small and intricate, but I think it will be beautiful. I think it will end up looking similar to the "single-color" OBWs, kind of like an antique Persian tapestry. I say go for it!
Edited to add: What's the repeat length on the pattern?