Thanks, everyone! The funny part is that the write-up took more time than the repair (including the trip to the parts store to get clamps, as I never expected to find hoses without clamps).
I said it in the write up but, It is absolutely amazing to me that BMW did not clamp this hose! Not sure if this is as designed or if this was an assembly error during the manufacture of some vehicles. I cannot believe that BMW chose to simply press the hose into the sleeve! This is at best a $0.10 fix for BMW during assembly!
If anyone else does this, I'd really like to know if their X already had hose clamps. It just seems like such a ridiculous oversight. I mean, you have a hose carring water over your interior, with a likely drain point that includes your fuses, amp, cd play, nav, and potentially your auto-leveling suspension and your battery. I would think that BMW would do everything in their power to not allow water to compromise any of these systems.