The two CCFLs have just arrived, and I've popped them in - looking good. When I've mounted them properly I'll post photos.
I'm considering various options for the switch, but I'm thinking just modding a PCI plate. The other condsideration is that so far about 2 in 5 times turning on the lights causes one of my HDDs to power off and spin up again. (Same cable from the PSU) I'm reluctant to run another cable down, but I'll see how it does. Not a disaster, as it's not the Windows one, but a bit of a nuisance.