You get 4 identical skimmers in this pack. If you wanted to add a buzzbomb launcher it wouldn't be too hard to fabricate one from a bit of brass rod/tube or even a plastic sprue offcut.
I've painted their skimmers Humbrol 86 Olive Drab the same as their body armour, with a Valejo sepia ink wash. Details are picked out in Vallejo stonewall grey with a black wash. The GEV skirt is Vallejo matt black with a Humbrol 32 dark grey drybrush.
I've already got some which act as fast scouts for my NAC troops, though I've treated them as grav vehicles rather than GEVs.
They're also ripe for conversion by adding bits of brass rod, plasticard fins and head-swaps.