In the same vain as 'Why use Plasma Guns' thread...
This is about to come up in our group with marines getting access to respected equipment. On the surface of it the Storm Bolter just kicks Xenos butt - and other than raw game fluff and flavour (which I am all for) why would you take a combi weapon over storm bolter? The second weapon is single shot only... and the rest of the time the gun is just a standard Bolter - the Storm Bolter is dealing out way more damage on average. Am I missing something?
I read somewhere that the Storm Bolter is going to be 'errata'd' to make it distinguied, or terminator armour only? Or that may have been in the house rules section.. I dont recall.
Its hard to see a good reason to take a combi weapon over a storm bolter....