have you personally gotten rumble to work? im wanting to get the new Logitech pad, i think it's the one you mentioned, it has a better Dpad than teh Dual Action which i have, IIRC it has rumble as well.
Call a wako and weird, but I have the affirmentioned device on a PS1 controller and also logitech wingman Joystics. Neither epsxe nor the N64 emulators give me trouble with the rumble options. It also works on regular PC games.