From a safety standpoint, very little concern. From a logistics and convenience and yeah, even social standpoint, quite a bit. It's 2016. You are a product of "these modern times". You're pretty smart. Weigh the advantages and disadvantages of 6 ounces extra. Hint: in the old days we often carried that much weight in coins in order to be able to use pay phones and/or buy sodas at machines. You might want to consider bringing a phone and sending it home in Damascus if you haven't found it useful enough and no longer desire it by then.