You can make a gaucho weave with the grid maker. But, you will only be able to do that gaucho with one color, or one single string. The grid maker does not support 2 string versions of interweaves yet. I know that the creators of the grid maker were expressing to me that they had 2 string version in the works. No release date set as of yet.
My best advice is if you wish to pursue the gaucho interweave like you are now, with 2 color strings, then make the base turks head of 5p 4b and then do the interweave as shown in your book. You could also make the single string version on the grid maker and keep the strings far enough apart to see how the knot is built.
For all intensive purposes you could always make the single string version with the grid maker and just tie the turks head part in one color and then tie the interweave. Start the interweave at the same end your standing end is located at and go from there following the grid pattern.
Brian...