This scripts vs binaries situation reminds me of something in the linux kernel: you can't use the sticky bit against scripts. When you add it, it shows as sticky in 'ls -lF' but doesn't work when you go to run it. Sticky bit is only for binaries.

It seems stupid, but on the other hand I never see people abusing the sticky bit, possibly as a result of the higher barrier to entry.

On the other hand, it causes me inconvenience every time I want to do something legitimate with it.