No, but I'd love to hear how you get on. I've been DJing for 20+ years, and although its now obsolete, I love my Tonium Pacemaker for portable DJing - http://www.pacemaker.net/Products/Pacemaker
The restriction with Apple products tends to be the need for specialist audio interfaces because of the dock connector. As you know, if you are using iPods, this isn't too difficult to overcome in terms of a DJ console, but the iPad being a good bit larger needs a bit more thought.
Have done numerous gigs so far using this and it is the cats a$$! Plus it's alot of fun! Next is to go wireless with Airplay and then add a Seagate GoFlex for extra storage!
Ive been using DJ player as a single deck alongside a pair of cdj's. I like it because it's full screen and has built in effects. I just wish djay would release an update so you could use it full screen. Then I'd buy another and use 2 in conjunction with a mixer and get rid of all physical media. I hate those built in mixers. I need tactile feedback.