The MP-2 combo will sound great with the 853's. You will have to convert em to run phantom, or use a battery box tho. And in a pat down situation, it would be tough.... Tapes will sound real good tho...
fwiw, i got in at HOB LVS with the following: at853 w/6' of cable, at8533 modules, mv100 and m1.
security wise: hold out the arms, wand the entire body, pat down and
wand again. wand beeped on my keys in pocket and my cell phone.
i haven't been wanded with the mp-2, but have been patted down. i had km140>mp-2>m1 and got through. ymmv.
marc