Looks like great fun, I'll be using my Martians (which only finally turned up from the KS last week!) for VSF too. I think I'll paint them silver or bronze rather than the traditional teal.
Do you find in skirmish games like this that by keeping your troops in groups of twos or threes you can overpower individual opponent miniatures? Playing as Savvies in Necromunda I outnumbered most other gangs at least 2-1, if not 3-1, and I simply sent the filthy grots around in small bands, and no single character could match them. Just looking at that poor, solitary Brit getting gang-bashed by a trio of Martians reminds me of that sort of thing.