Probably Dyz has Geoff stationed on Pumpkin Hollow for espionage on Taran, to see if his collaboration with Stroud runs any deeper or if there's any reason to be concerned about goings-on in Pumpkin Hollow. He wouldn't ask Geoff to make a move unless it was worth the risk! But the second idea could also be why Gerard is here--- to check in with Geoff, and to pick up said alchemical supplies.

Of course if you'd rather have Gerry be the spy and Jeff be the grab-and-go, that would also be fine!