I play acoustic guitar (with a magnetic pickup through an acoustic amp) in a band that also has drums, bass and an electric guitar. 

I mostly keep the rhythm with chords (I am an amateur in guitar, but I write the songs of classic rock/folk genre) and I want to try (in some cases) to do something more, playing as lead guitar (an intro or a solo for example) while the electric guitar will play the chords. However the member that plays it says that it won't sound good, that el. guitar will be too loud for the acoustic to be heard and stuff like that.

Is there any truth in this?