Mh, I was burned by the first wave of timecode stuff, it was 2009 iirc... nice to see that technology has advanced :)
But still, it (in my opinion) looks less professional if you work with a laptop instead of appearing with a suitcase of disks. Appearing with vinyls makes the audience believe that you as a DJ prepared for the event and selected music for them, a laptop feels like "meh I could do that shit when you give me ten beers and a line of coke"...
Audience listens to music. Carwfully prepared turntable routine is more important, and a lot of laptop tricks aren't reproducable on bare turntables anyway.
But still, it (in my opinion) looks less professional if you work with a laptop instead of appearing with a suitcase of disks. Appearing with vinyls makes the audience believe that you as a DJ prepared for the event and selected music for them, a laptop feels like "meh I could do that shit when you give me ten beers and a line of coke"...