Hi there,
After a considerable time (more than I care to admit) lurking on these boards, I've finally signed up so that I can bother people who actually care about the works of Brandon Sanderson (none of my immediate friends are geeky smart enough to).
First up, during the London signing at Forbidden Planet last year I was able to pose a question to Brandon in the signing queue (, paraphrased I probably said it far more clumsily at the time);
Q: During WoR Kaladin is able to retrieve stormlight that he has infused into objects. Can another Surgebinder retrieve this, or is it like Breath where only the person who infused it can retrieve it?
A: It's more like Breath, and Feruchemical storages.
Hope that this information is new and interesting (and scores me some points) if I hadn't bee so starstruck I would have followed up as to whether investiture can be 'hotwired' to allow someone else to retrieve it, although given how quickly that Stormlight is lost I suspect it would be more effort than it was worth.