I used to mix other people's systems or clubs only, and made very little money, and zero profit after gear purchases. I didn't want to invest in heavy gear, a large truck, dealing with the weight, etc. Thanks to the quality new powered boxes available today, and mixers like the DL, I now have a fully functioning side business providing PA rentals, lights and operator. I'm actually making money now.
The reverb is not as good as others I've used, but I still find it useable after some EQing. I'm doing a small concert series in a marina park this summer, so I've had a chance to really hear the effects. My system is working to its limits, and the sound is excellent. I bring the reverb up just until I can hear it, then ease it back a bit. The last show I used it with all vocals, snare, trumpet, sax and flute. Once I had my mix set up, everything sounded fantastic.
YMMV