Corsair Keyboards

I want to upgrade my current keyboard to a better one. I currently have a k68 with Cherry Mx Red Switches and just plain red LED's. I was going to get the Corsair k95 with Cherry Speed switches, but saw that they had released a Corsair K95 XT. The website I normally order my computer parts from...

Is it possible to replace the switches on the Corsair K68 RGB? And if it is, how hard is it and will it damage the water resistance? Thanks!

I'm building a new PC to use as a HTPC, eg: a PVR in a PC. Using a: TBS 6205 DVB-T2 DVB-C Quad TV Tuner PCIe Card. OS: I would prefer Windows 7, but it seems that I'm being forced to use Window 10. I've considered Linux, but that seems to be another minefield? I've been spending a lot of time...