I think that you should be alright if you think of them like dwarves. I mean, they do have hobbos, but those don't count towards core and the actual dwarves are decently expensive (though they can take GWs, so that might suck if your opponent ascribes to the "bigger is better" rule). The biggest worry that I can think of is the blunderbusses - mostly because in the Ravening Hordes list they hit *every* model in the unit. At S5. Yeah, that might suck, no matter how many bodies you have. The earthshaker sucks a lot too because it keeps you from moving very quickly - kind of like the rune of wrath and ruin, only with a template.
The indy list is a bit more balanced, but chaos armor on every dwarf is a possibility and WS5 dwarves with GWs and Fear in special might suck a bit too, especially if they catch something outside your LD bubble. Other than that, they have a lot more chaff (though iirc it still doesn't count towards core, so maybe you won't be overwhelmed) and warmachines that can fight back (think Hellcannon).
All in all though, I think that if you can make it through the shooting that you'll be fine. That's a metagame thought though, because from watching your BReps no one in your area has yet learned the lesson that you've been beating them with for months - that they need bigger units.