Why a dj mixer?

Why a dj mixer?

I have an APC40 that I’m using, able to control traktor all internally with this map Paddy's APC40 Mapping for TPro (yup another one :D). All I really want to do mix externally. Since I’m using internal fx and really only need the mixer to do things any mixer can do what’s the benefit to going with a dj mixer?

Anyone try this and end up regretting their decision?

I’m currently running as I said, the APC40 with a fast track pro.

Thanks for your help before I drop cash!

Sincerely,
The new guy.

A dj mixer is meant and built for djing ? If u use tractor is would be very strange if u used a studio mixer.