I've seen many people complaining about the G3 limiting you to either expression and no tap tempo or tap tempo and no expression (it only has one jack on the back). Well, let me solve your problem for $5. Go to Radio Shack and buy a 2 Female Stereo to 1 Male Stereo adapter. Plug the adapter into your G3 and your footswitch and expression into the adapter. Go to the screen for control switch functionality and set it to "tap". I tested it today using expression for vibe speed and footswitch for delay time. Worked like a charm. Btw, the vibe in this pedal is almost worth the $199. Now go set some tempos and wah to your heart's content.