Here's a cool trick: if you want either a dual clock or just an analog clock, download this .cab at XDA by ancola66.
First disable your TouchFLO under Today --> Settings, install the .cab, restart device and then re-enable TouchFLO.
To toggle between the 3 screens (regular clock, analog-only or both), simply tap the area below the HTC Task Manager.
I'm running it on my own custom ROM (due out shortly, ahem) and it works very well. It definitely gives the today screen an elegant look.
Edit: One bug is that the analog clock shows "AM" when clearly it is PM. C'est la vie.