VBF/DY interference in SUSY processes

Hello,

We're working on a VBF EWK SUSY analysis, and had some confusion about how properly include interference between VBF (pure-QED) diagrams and DY (QED+QCD) diagrams. We have two different setups:

import model MSSM_SLHA2
define p = g u c d s u~ c~ d~ s~
define j = g u c d s u~ c~ d~ s~
generate p p > n2 x1+ j j QED=99 QCD=99 @1
output -f

and:

import model MSSM_SLHA2
define j = g u c d s u~ c~ d~ s~
define p = g u c d s u~ c~ d~ s~
generate p p > n2 x1+ j j QCD=0 @1
add process p p > n2 x1+ j j QED=2 @2
output -f

There are notable differences in kinematics between the two, especially in distributions like mjj and delta-eta, which are sensitive to the handling of VBF processes. I guess we have two questions:

1) will both setups above include interference effects?

2) will both setups above include all VBF and Drell-Yan diagrams?

Thanks!

-Mike