Aftermarket ECOS (Emergency Cut Off Switch)

So, I realized the /5 has no ECOS. For safety's sake, I'd love to put one on. I know it's not stock ... but hey ... it's my bike.

Anyone know of any good ones? It'd be cool if it was styled similar to the BMW controls, but that's not necessary.

you can get a 'race car 'style one and
mount it on the battery cover.
http://www.bizrate.com/automotiveperformance/oid684938895__nwylf--.html