Per policy of the Rainmeter site, we do not create skins on request, but will gladly help you create your own skins.
However, I've long since used my own layout switcher skin, but never posted it as it is a fairly trivial skin for anyone to create. So you are in luck, as I posted it in the Share Your Creations forum since you are asking.
Check this pure-Rainmeter alternative to RainRez: Layout Switcher