So I'm very much stuck in the "Stormcallers are support" vibe, so take this with two big pinches of salt. The second pinch is: I'm allowed to have 'em as foot in this campaign (It's all ZM/SecMec - no vehicles or mounted) - a simple swap of Helamite for Sky Mantle or Ash Cloak (whatever they don't have, I forget offhand).
Point being, Stormcallers even then, have two main functions for me: a vehicle for adding/taking visibility (if open/I'm in danger of getting bombarded), or for using the "Take it down!" skill to target big hitters and benefit the rest of the gang.
In that respect, getting them up close and grubby isn't useful.
Still, I'd appreciate that being *my* choice. I'd like the spirits to still work on 'em, in a pinch!
The big problem for me is that these rules are a damn nuisance to remember! Even getting a *feel* for them is annoyingly difficult.