I've been using an Otter for a battery box for a while, and that is pretty well packed. Should be fine, but I've heard soewm stories about having to pry them open after a flight.
And the tape around the vial should be fine. In addition to the amber glass, I use a label around the vial that has all the directions for using PA. The bottom is open, just so I can tell quickly which vial I'm using- the Immodium in the other vial won't make bad water good. I figure that what little light reaches them during the monthy repack of the PSK should be too bad, becuase the origional bottle had an uncovered bottom.
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-IronRaven
When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.