I have the same problem, that I want to turn on TouchFlo 3D, but still want to keep my "Classic" Today Screen intact.
Although I tried SecondToday, however it cannot display the internal plugins such as Tasks, Calendar and Date
Thanks to wensing's suggestion, I created this simple script. If you want to run the script, please follow the instructions below.
a) The first thing you need to do is to disable the TouchFLO 3D from Today Panel Plugins, then activate your favourite Today Plugins (except TF3D)
b) Install MortScript
c) Put the "ToggleManila.mscr" in any folder you prefer.
d) Create a shortcut to this script, name it (eg. ToggleToday.lnk) and put the shortcut inside the folder "\Windows\Start Menu\Programs".
e) Go to Settings->Buttons, and simply assign "Button 1(Hold)" to point to the ToggleToday shortcut.
Of course you are free to experiment with other settings or assign it any other buttons.
Another thing to note is, because TF3D will "take over" the Home hardware button, I have no choice but to kill it, so that the classic Today Screen can be activated after TF3D is killed. However this also means the next time you activate TF3D, it will take some time to load. So please be patient and wait for the TF3D while it is loading.
Anyway, this is my first attempt at using MortScript, just a simple piece of work, but hope that I can bring some joy to my fellow Diamond users.
Hope that it works for you guys