I am just musing something while at work (so no rule book to hand)... and anyway, BOLS opinions on this would always be welcome...
I am in the processes of some minor updating my IG hoard list for 6th...
I have an aegis battle line with a quad gun already; but ideally would like a bit more AA as it is likely that with my gaming group someone will soon be fielding 3x flyers...
One way I could do this is with Vendettas... but this is £-expensive, I don't really like painting vehicles etc...
Another thought I had was 'can I use either a primaris psyker* or an allied-SM libby** in such a way that they could do some consistent/effective anti-aircraft defence'?
*have already decided I am going to buy some empire wizards for conversion for this
** I am going to be getting the new boxed set anyway for the little rule book etc, cultists to turn into necromunda gangers etc, so if I could use some of it's contents for AA that would save me a bunch of cash