So I have a Fishman Loudbox Artist. It is fantastic for small solo gigs with an acoustic guitar. The amp is quite "transparent" (it does not color the sound like a electric guitar amp does). Vocals are good as well. I find the reverb settings pretty good (but not amazing). I mostly use the Reverb for vocals.
While I mostly use this amp for acoustic and vocals I have also played around with it using a semi-hollow electric through a pedal board. I was at lower volumes and going for a clean sound. It seems to work well this way although I've not actually performed with that setup.
One nice feature is that each channel has a DI out that you can run into a mixing board in case you want to record or if you are going to house speakers.
I should emphasize the Loudbox Artist is fine for "intimate" settings. For example when my friend and I play at farmer's markets (electric bass/acoustic guitar/vocals) we go through a mixing board to a couple of QSC K10s. The Loudbox Artist would not cut it in that context I think.
One minor issue is that the Phantom power is only 24V not 48V. No issue with a dynamic mic (like a Shure SM58) but there are a number of condenser mics that are not going to work going direct into the LoudBox. May not matter at all to you, but good to be aware of just in case.
