Heya!

Should be a good gadget to have indeed. Anyway considered the state of the game I'd do it when their charge of work is completed (some time later than the end of September). For now you can /clock or check the little clock in (default) top right. I have a Swatch that tells me the hour, and being fiscal about the clocks I check it every 10-20-30 minutes.
That's how I time for low-ranked NM hunting =D

I don't see such a bother for now. Maybe in the future, when content will be so much complex that you need a clock.

See ya!