Solo gig set ups

Does anyone doing an acoustic guitar/vocal gig ever set up things in a way that you are more or less using your acoustic amp as your monitor as well. I am thinking in a small/medium venue if positioned right this could work: plus having some powered speakers / PA as well - which in my case is done with the line out of my Fishman Loudbox to an Alto Trouper... 
 
thanks

You are right - how loud? I really need to do a gig with the PA /Trouper and leave the Loudbox Mini at home... need to add one of the boxes like TC Helicon Play Acoustic to get the Fx I want
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Solo gigs usually mean you're not going to have other folks to load in/out or set it up.... so consider the weight of the speakers and mixer/amp as well as their size.
 
Many of the smaller self contained and self powered speakers sound pretty good.  Remember, if you need to be louder, you can always buy more speakers. But for 99% of the gigs, a small PA will do the job. Factor your budget and go visit some music stores to get an idea of what is available, it's size, weight, accessories, how it sounds, and of course, price.