I guess you made my point for me. As for creating more boost, well I don't know how to explain that. Being that boost is for the most part entirely controlled by the wastegate, I am not sure why a CAI would cause you to boost more. Never the less, I think this proves with valid enough evidence that the time spent on building a CAI for a turbo with intercooler is not worth it. In my opinion of course. The worst hazard would be to suck in water. Which outways any mild gains you may see as a result.
You can never predict when you may be caught driving home in a downpour, or in flooded streets. You could just have someone drive by and hit a huge puddle next to you for that matter. I would rather play it safe and keep my intake as far from puddle sucking as possible.

Built block.
Refinished head.
Tuned suspension.
TURBO.