Funny you bring up K-scope. They are one of the groups I was mentioning as an example of a multi-purpose design firm that has grown from ID, shifted, and evolved offices based on client relationships. Their NY office grew substantially (and eventually moved on) out of a business relationship with my old team at Symbol/Motorola. But like yo cautions, over time we realized it was easier to bring those designers on board full time then it was to keep using them on the outside.