Youroo, good explaination about the plumbing differences, that make it either a hot or cold dribble.
I used a similiar setup, installing a valve just under the shower head, and even though all valves sold as a plumbing application, have the built in dribble feature, it slowed it down considerably. The only valve that doesn't is for a garden hose application, being its cold water use only. The problem is the thread adaptation.
Anybody have any 100 watt incandecent light bulbs for sale!