How can I pass arbitrary parameters to my mocha tests with mochaPhantomJS & gulp?

Question

I'm using gulp & mochaPhantomJS. I'd like to use the same test html and run different tests against it. How can I pass arbitrary parameters (by which I mean not the phantom args) that I can retrieve from within my test JavaScript?

var gulp = require('gulp');
var mochaPhantomJS = require('gulp-mocha-phantomjs');

gulp.task('testMisc', function() {
    return gulp.src('testMisc.html')
        .pipe(mochaPhantomJS());
});

But to be clear what I want to be able to do is

gulp.task('testMisc-1', function() {
    return gulp.src('testMisc.html')
        .pipe(mochaPhantomJS({whatever:1}));
});

gulp.task('testMisc-2', function() {
    return gulp.src('testMisc.html')
        .pipe(mochaPhantomJS({whatever:2}));
});