Speaking from the point of view as a live artist, I can tell you now, Live acts take a lot of time, effort, blood, sweat, worry and the rest of it... in fact, I sometime have people who wonder why I ask for the fee I ask for (Which I might add is a lot less than what some people get paid to dj).. it's not just playing on the night, it's the 6 weeks before hand that you're writing it (Admittedly it means you can record this material and put it out, with the added bonus of having had you playing it out for 6 months), the stress of getting to the airport, checking your stuff in, and hoping it gets there, and then finally at the gig, hoping they got you the right mixing desk, and that everything still works.. it's a ball ache, but I think it's worth it.. the sound you get from a good hardware liveact beats the shit out of the sound of records...
I did try doing an ableton liveact for a while, but decided I didn't like it, besides, everyone is using ableton these days..

I take an MPC 2000, and Nord Modular in my suitcase, and I just bought a new rack bag which I recon I can get away with as hand luggage, this will have my drumstation, quad fx and compressor in.... it's real stress though, hoping your precious equipment is still going to work, I say fair play to akai for the construction of the mpc, the screen is slowly heading south but it still works... as does my nord mod which once had beer spilt all over it halfway through my set at holodeck in cardiff..

so, knowing my own experience, I say full respect to anyone else who does it, it's a stressfull experience...