Through a sea of boos (and some cheers) Donald Trump announced his inaugural venture into the sneaker world at Philadelphia’s Sneaker Con. The Saturday launch marked the first time a former U.S. president has unveiled a sneaker line — and some say that’s for good reason. The metallic gold high tops — priced at $400 and limited to 1,000 pairs — sold out within the day. But sneakerheads say they aren’t the ones purchasing them. Online, the shoes were quickly mocked for their slightly off resemblance to Nike Air Force 1′s and Jordan 1′s. “Scammer 1′s,” Alvin Blanco at Hip-Hop Wired called them in…