Pretty much, though funny enough they don't have the numbers to hold objectives so they can't sweep
GT's
I highly recommend building an army around The Verminus Clawpack. With that as the backbone of your army, you'll find you have a super balanced force that can compete in any objective based scenario. Get the Spire of Dawn for sure.
Take the big units of 40 clan rats (the more you take the better they are), or units of 10 that will hide out of line of sight for objectives. 30 Stormvermin is great. If you can find Tretch, he will really add to the power of your Clan Rats and Stormvermin. Warplightning Cannons are great for sniping heroes, and so is the Arch-Warlock.
The Arch-Warlock with a Crown of Conquest can really add to your army: He can cast 2 spells, either dealing out mortal wounds or Shield. His signature spell deals mortal wounds to 3 different units. He has a once per game shooting attack that deals mortal wounds too, so in one round he has the potential to deal out 15 mortal wounds. He has a 3+ save and 6 wounds, which means he is durable and good for Three Places of Power. He's also no slouch in combat, and can dole out an additional 9 wounds.
Rattling Guns are great for taking out Heroes at a distance, I take 2 to make sure the job gets done. Warpfire Throwers can push out lots of Mortal Wounds, but they have a short range so keep it guarding an objective or one of your heroes.
If dipping into forces outside Skaven, I like Sayl so I can throw a fully buffed unit of Stormvermin at something and deleting it. For instance, buffed by Tretch they cause double damage on 6's to wound and have -2 rend. The Warlord gives them 3 attacks each. They will normally outnumber anything they attack, so now you get +1 to hit. It's absolute murder, my locals fear them. I took out the elite half of a Bretonnian players army with this unit alone in a single round.
Have fun!