I've looked around quite a bit and I'm about to bite the bullet and order the Panasonic DMW-RSL1 Remote Shutter Release which feels quite overpriced, but is the manufacturer's own product. At that price point, I'm quite tempted to go for a slightly more featureful StudioHut product with a built-in intervalometer. Although part of me is thinking that this is ridiculous and I should just get the cheapest compatible switch I can find.
Is there any reason to prefer the manufacturer's product? Are there wireless shutter-release solutions that work with the Panasonic interface?