just did a 6hr 2 DJ/VJ gig with 1.9.0 and 1.1 using the SL1 and an Axiom25 for control. My partner set up using the 57 for the primary station, with the SL1 running into the spare line inputs for the second station. We used a video mixer to switch signals sent to the big screen and video monitors. It was flawless, easy and fun...but IMO the TTM57 is still the weapon of choice.

Him
MacBook Pro Unibody running 1.8.4 & 1.0.2
TTM57 1st gen

Me
MacBook Pro 2.5Ghz running 1.9.0 & 1.1
SL1
Axiom25

this set up was excellent.