I have put together some extremely simple scripts & shortcut icons (default smartreflex options only) so you can switch among the frequencies by just tapping the icons:
I am just too lazy to create the specific icons for each frequency, so I just make use of an existing warning icon...
You can download it from here:
Make sure you have read the readme.txt on where to put the files.
I believe some smarter people can come up with nicer UI + features and packaging than this; but while we're waiting, maybe these are good enough for some of you?