We all know the Pirates favorite draft mold is a Prep Pitcher with at least a 6'4" frame that is still filling out. But they appear to have a mold for college bats as well. It is plus defender with a stress on plate discipline. For this reason, Gamache fits the mold. He fits the Daniel Grovatt mold.
Grovatt was a plus defender because of his arm. He hit only .291 with a .483 SLG and a .387 OBP. However, he had more walks than strikeouts (39-37).
Gamache is a plus defender at 3B with a good arm. He hit .299 with a .464 SLG and a .414 OBP. He struck out only slightly more than he walked (30 BB - 33 K).
This same profile fits Drew Maggi, who had a higher OBP than a SLG and his first year walked more than struck out (although his sophomore season he had a dramatic increase in strikeouts). Matt Curry (although his K total is a bit high, he had more walks) and Justin Howard.
Jonathan Schwind, who just signed, fits this bill as well. .287 AVG, .395 OBP, and .446 SLG and more walks than strikeouts.
Maybe this explains the lack of power prospects in our farm system. The Pirates draft plate discipline and hope power follows. I wish they would take a shot at more power hitters, but that does not appear to be their draft philosophy.