Reply to Traktor Z2 and X1 Questions

Hey people first time on this community have to say liking it so far. Have read and learned alot from here.

Just have a quick question. I was in Ibiza and have only came back the last few days and I noticed that some of the DJ's didn't use CDJ's or vinyl they were using traktor X1 mk2's and a 4 channel mixer. I never thought of doing that or heard of people doing it. Now in the last few months I have really been getting into DJing and have been using my friends DDJ- Errgo for practice and I'm decent but would love to have my own gear. I've been shopping around for gear and have been believeing of getting 2 traktor X1 mk2's and a traktor Z2 mixer with traktor scratch pro and remapping 4 of the nobs on each X1 mk2 to control EQ and gain for that deck (fx=gain, fx1=high, fx2=mid and fx3=low), and leaving the other 4 as they are. Now I know someone will say just get a DJM 850 but I cant afford any Pioneer mixer that is 4 channel and has USB for traktor.

So here is my question.
If I was to connect 2 X1 mk2's to a Z2 mixer and remap 4 nobs (fx=gain, fx1=high, fx2=mid and fx3=low) on each X1 mk2 to control EQ and gain like on a mixer, would it work since the Z2 mixer is a 2+2 mixer and can control 4 channels?

I dont see why this setup would not work since there both native instrument products and all I'm changing is the fx nobs.

Thanks for the help in advance