Also the sample size is so small with Siemian.  It was his first year starting, you can't make 4 year starter comparisons on a first year starter, its ridiculous.  Kaep is not as bad as everyone thinks, he was on a bad team, and the niners got REAL bad quick, around him when the GM started mucking with Jim Harbaugh.  I think Kaep can play but you're right it still has to be shown that he can stand and throw, the running schtick eventually just leads to chronic injuries for Quarterbacks.