EDIT: I should also point out the number of times I've poured fire on a Scyk...expecting it to crumble...and have those green dice come up crazy. I've lost games that way.
This is one of the reasons why I like Serissu + HLC squad combo, along with evade tokens. The HLC means you don't want to fire at R1, and having an extra green die, plus the evade token, plus Serissu's ability means that they survive a lot longer. I've had games where I haven't taken any damage at all.