Eeps, just thought of something I completely forgot about and which Silk could do (/could've done) with the free action she got left:
Instead of using the bench only for cover, she'll also use it to hide; free action: deactivating the holoclothing to reveal the ruthenium polymer beneath it.
These guys are behind a smoke cloud; she's hidden in chameleon-wear, thermal dampening (in case these guys got thermal too) and behind a bench with a very immobile ork on it and another ork with a gun next to it. She'd figure chances of her being a target should be pretty damned low... Not to mention feeling really good using Omar as a meat-shield vs guys with taser-lances.