Kiwibrew - The entire purpose of soaking the jalapenos in vodka is to kill any bacteria. Yes if you keep them in vodka for 2 weeks you will take out most of the flavor/heat out of the peppers, but thats not quite what the OP is going for. IF you keep them in the vodka for just a few days it will kill any bacteria and then you can let the beer soak up the flavor. The OP want to put the jalapenos into the bottles not just the vodka/flavor. It helps if you read the entire thread.
I know this from experience, not just here-say. I have brewed about 20-25 gallons of this same type of beer (Cream Jalapeno) I have made a Jalapeno, a smoked Jalapeno, a Habanero beer, a blend of jalap's and Habanero's. The most interesting was a Jalapeno IPA.