I agree, the setup can take a bit longer.
BUT:
I've been using Traktor Scratch for about 6 months now, after upgrading from Final Scratch 1. It's absolutely blinding!!!

The new cabling is much easier to set up, nice xlr connections, solid hardware and software.

Oh yeah, and it runs no problem on a 3 year old Sempron 2800 laptop, with a gig of ram and 5400 hd. even using the built in effects.
I was concerned wheter it would, but was well surprised, no hiccups.

I use it every week, even the control vinyl lasts longer than FS1.