Yeah, I've used the two-amp solution with reasonable results.
Not two matching amps, but two Peaveys. (My Ecoustic and a 50-watt Bandit which is an electric guitar amp.)

Kind of jury=rigged though. As I recall, I used the monitor outs on my 4-channel board so the amps were self-powered. Weird setup, works OK if you set up the separate volume & tone controls carefully. Too many knobs, cables, etc. Only real reason to do it IMHO is if you already have that equipment and don't want to spring for more.   

W-O