Multiple Pinterest Media Parameters

Wish: Is there a way to define multiple (separate) media parameters for the Pinterest Widget.

Reason / Complication: Have two separate image classes for premium images (svg, png, et al.) and the default image type for everyone (only jpg, gif).

Bonus Round: Most of the nodes have one or the other - easy. Some have both. Order of preference is to add the default Image feild, but could go the other way if Pinterest gets better SVG handling.

Before the "tell feilds to fix itself" crowd chimes in - I'm hoping that this can be resolved in D7. Until then the posts with premium images will just have the Pin It icon disappear.

(If there is a generic token for this already I'll feel silly, but be thankful if someone else knows)