1) sports bra != bra. They're different tools. Many women have brought those up for running, so the point is done and proven. I have no counter point to it.

2) I'm from Florida. But that's really interesting. Tools for body heat retention is an interesting topic. Do you have any other tips for this use case?

3) No. But that's another interesting use case. But wouldn't a nipple only device be simpler and more effective? I just found a tool called LilyPadz which seems to suggest that possibility.

4) You're basically saying that this use case is as a workaround/hack, not a permanent fix. The article is about custom clothing anyway. Maybe an Alvin Toffleresque prediction about mass produced, custom clothing would fit here.