Myn's RLS3 is a nice ROM. I dont know if you'd be interested in something like this... You can use Launcher Pro on myn's and use the "cleardefaults" app anytime you want to switch your homescreen set up to a sense one. Basically what I mean is whenever you press the home button with multiple launcher the OS will ask which launcher you want to use. It will do that until you set a default.
So in this situation you can kinda have your cake and eat it too.