If the proposal passes and I suspect it will, a doping violation no matter what the context means you will miss an an Olympic games.
From The Washington Post:
"AMSTERDAM — IOC President Jacques Rogge supports proposals to double the length of doping bans to four years as a way of keeping drug cheats out of the Olympics.
The World Anti-Doping Agency is planning to raise the penalty from two to four years for serious drug violations in the next version of the global anti-doping code, which comes up for approval next year and goes into effect in 2015. ..."