i hate to have front downtube shifter and rear click shifter but at the price i was wondering if anyone knows about the sram x5 trigger (10 speed shifter) and why is it that some people say it requires sram derailleur? does the direct cable actuation no longer have direct effect on the gear pull on shimano derailleurs, but instead has some kind of auxillary actuation to a mechanism that controls primary actuation of the derailleur?