And let's differentiate between "mixing" (transitioning, beat matching, etc.) and CREATING sounds via scratching and crossfader twaddling. Mixing, cues, etc. are important tools ... scratching, etc. not so much for the "mobile jock" (unless you have a club loving crowd).
My original point is... whether you scratch or not....you wouldnt have been blessed with serato (atleast many years earlier than you did) without the need of those guys who do... you'd be lugging cds
cc