IME, the Epi Viola has better fit & finish than all the other violin-style basses in the price range including the Hofner Ignition/Icon.
This is based on the older Korean-built one I have, so I don't know if the current ones are any better or worse.
My Epi viola is the only bass I currently own, but then I've never been a gear hoarder. It's surprisingly versatile if your picking hand isn't glued in one position. It will always sound like a hollow bodied instrument, but I find it very responsive to different attack styles. Down stroke, side stroke, tip of the finger, pad of the finger, play towards the neck or the bridge. All produce very different tones. It can work fine for things like funk unless you want that modern hyper "clacky" sound. It can handle slap but not as well as other basses. The action feels best a smidge higher than on a typical Fender and miles higher than on an active bass where you're supposed to just look at the strings to make them ring. You can't "dig into it" like a Fender, but it can handle a little roughness. I had to file the bridge a little to keep the strings from popping out though. I also had to file the nut to get the low E flat wound to fit. The hardware is a little on the cheap side, but it's a cheap bass. You get more than your money's worth.
I love mine, but I've seen others in stores that seemed poorly made. It could be the country it was built in or just inconsistent production. Either way, I wouldn't just order one in and expect it to be perfect like you can do for higher end instruments.
If you want the most modern of sounds, this won't do it. For most anything else, you should be fine. It's inexpensive, looks classy and sounds distinctively good. It's a bit different and might take some getting used to, but it feels great too.
P.S.: The viola, being a hollow bodied instrument, is fairly loud acoustically. Nice for practising in a somewhat quiet room. It also tends to rattle quite a bit. Nothing that comes out in the amp, but if you're playing acoustically, it gets aggravating. I have bits of cardboard and foam wedged into the thing to quiet it down a bit, but this is only because I like practising unplugged.