I've never hit urban before however I'd say bungee would be only one variable you'd have to consider as it would vary inversely with other variables such as gradient of inrun, smoothness of inrun etc.
Ya I you could def get it if you have a good inrun icy snow packed down maybe sloped which is perfect. 3 or 4 guys pulling it back and you're good. For larger urban get the 20 ft it's more $$ but longer and has more pull back