Yeah, what's up with that. Someone needs to invent a banana safe. I can't count the number of times I've reached into the bottom of my backpack to find banana goo all over and into everything. Ick. Otherwise, bananas are a nearly perfect trail food.
I did a lot of long bike rides (85+ miles) on a banana, handful of raw almonds and half a Clif bar, until a few years ago.
i have packed my banana in a pencil box-protected it well