I ordered my cuttles from thales and live on the opposite side of the country. They arrived in perfect health and i saw one eat with in the first few minutes upon entering my tank. After a few days they warmed up to the tank and started "begging" when i would come home from work. So to answer the question...yes they can handle the overnight shipping assuming that the person you get them from takes the proper precautionary measures of packing them correctly to ensure their survival while in transit.
The other issue, the one I think can be more problematic, is that sometimes bandensis will either grab one shrimp, munch on it for a minute and then drop it and grab another one or just eat their way through all of them very quickly. These issues may or may not come to light with every animal, but the possibility should be kept in mind.
