Boss VF-1 Effect Processor

Hi!

I'm a new onwer of the VF-1. Not a new player, been playing since 
1983 (eeek!). I had a GFX-700 before so I'm not too lost with the 
unit. I miss the possiblity of using stomp boxes in front of the amp 
sim like the GFX-700 could do, but overall, the VF-1 is better.

Here's my question: Does anyone here use it for live sound? How does 
it sound at higher volume? I just sold a tube amp because I have two 
small children at home and I really can't crank the volume, but I'd 
like to use the VF-1 as a preamp like a combo amp because playing in 
front of the computer pisses me off like you have no idea. And I may 
gig in the future so I wonder...

Also, I'll be playing keyboard again soon, so I'm think of buying a 
keyboard amp that would serve as a small PA for the synth and the VF-
1.

Now is it a good solution? Will the sound be good? I'm afraid of the 
sound dynamics of the VF-1 live. So far, it can be great for 
recordings, but through speakers, I hope it will deliver, otherwise, 
I'll have to buy another tube combo down the line.

Any input about your experience will be much appreciated.

Cheers!

Sly