Has Gabbert shown enough for 49ers to be optimistic?

Daily 49ers blog for NBC Bay Area website: QB Blaine Gabbert has been up and down in his first two games of 2016. Some media folks are skeptical about his potential for long-term success. http://www.nbcbayarea.com/news/local/Through-Two-Games-Gabbert-Has-Been-Up-and-Down-393999531.html