Reply to Echo indigo DJ PCMCIA card

I really like this one because of the PCMCIA-factor; it's sleek, and one less clunky object to lug around. I'm just wondering if it will be suitable for my purposes. i know from Ean's reviews this sound card is good for @ home and small clubs. Given the nature of my situation, when i do start playing out with my VCI-100, it will most likely be at raves. So, the rooms will be medium to large. Would i run into sound distortion, or any other glitches, quality probs, etc?