Sorry for the delay in getting an answer back on this. This is actually by design for Version 8. We are preparing for more of a "layers" approach for weather, and other aspects. However, we have to complete our seamless charts feature first.
At that time, we will begin showing nexrad over sectionals and other charts, and this will basically allow you to "toggle" the weather mode on/off while on whichever mode.
I hope this helps. If you touch and hold any point in weather mode, Weather Information is the first item in the actions list.