I have tints. I usually park in a garage at work.
Heater? lol I'm in South Florida, I think I may use my heater in my car a handful of times a year if I travel to Orlando in the winter.
It's a mobile unit, so I can take it off the cradle whenever I want. I thought about it for a while. I knew I wanted the D3, I have my Inno and didn't want to buy the XM module, so I needed a solution that looked clean and I kept my functionality. I think I succeeded. 

It uses AV1 in the rear of the HU

Some of it, not all. I found a local guy on AVIC411.com that's opening his own shop, good guy, does good work. I had done the bypass and knew where I wanted stuff, helped him install and take stuff apart and had all the ideas laid out. He was laughing at me with my diagrams and schematics, part numbers, etc. I printed out the Scion NAV install so we knew how to take the dash apart quickly and where to place the NAV and XM antennae. In the end though he admitted it was all useful and it sped everything up. 
Research rules.

Enjoy your D3, they are great little units aren't they?

I can see it now: "No officer, I was not playing while in traffic" lol
I've considered getting a PSP, they look sleek as hell.

just a quick question... can you still use the AUX and iPOD input with this unit? or does those inputs become useless?

Those inputs are gone when you replace the HU. The D3 has its own inputs you can work with to accomplish the same things, that's being illustrated with the Inno in my case.

Looks really good...

Question: What accessories did you use to mount the D3 in your xB? I notice you have inserts or covers to the left & right of the radio that filled in the gap within the trim. Did you use a particular mounting kit?

Thanks