I have looked for this info on the web and in the forums and can't find any specific information.  I am 2 weeks from ordering my Line 6 Bass Rig and I need to know whether the FBV Express will do what I want with the LD300 bass amp.  Will it only switch between preset channels or can you program the 4 switches to function as on/off for the effects on a given channel?  How flexible is the programming?  Would it be difficult with the Express to switch quickly between the Synth model and back to the regular amp model.

Otherwise I may need to get the shortboard.