Seeing that the Yongnuo RF-602 is known to work on other Panasonic cameras, is it safe to assume it will work on the GX1 ? Has anyone tested it on a GX1 ? Also, I'm tempted to get a flash for my Canon 550D and M43 bodies. Can anyone recommend a flash that will work with both Canon 550D, my M43 bodies, and the Yongnuo RF-602 ? Thanks !