I know but the beta artwork showed Koromori next to Jessie! It has a ****ing heart-shaped eye for crying out loud!
You're just trying to find ways for Jessie to not have Koromori in the long run, but it fits Jessie far more than Ash. Besides, Koromori would probably be obtained in the beginning of the series. Can you really see Ash with Pikachu, Mamepato, Mijumaru & Koromori at the beginning of the series?
Type normally for once. It's annoying when people don't use correct capitalization, spelling & punctuational marks!