yes you can drill it. If it is not tempered. Take your time and use lots of water. Follow so of the guides you find on here and you will be fine. Dont rush it, I cant stress that enough.
Drill through one pane then shopvac or use any vac with a hose attached to clean up any small pieces then drill the other pane. You may get water between the panels but I don't think that would be a problem.