I'm still not blessed with the spare time to be have written down more than notes for the passage I have got in mind, but to check a few facts...
1) As I recall, the Salamander Scout does not have any access between the gunbay and driver's compartment, making the only access to the driver's compartment the top hatch. I'm taking it, therefore, that Iota is stuck in the front gun position.
2) I'm assuming the only two characters (currently present, at least*) who would have any chance (beyond pure luck) in a close range fight against Agares are Steren and Iota (before bearing in mind point #1 above, at least).
*Counting only active PCs, unless Riley steals a nastier weapon (but she likely is going to), I'd think I'd probably only add Haines and his thunder hammer to the list.