TOR Question

Hi, There was a thread on Nanog in January about TOR and deep buffers (http://seclists.org/nanog/2012/Jan/966). I have a follow-up, related question. Has anyone used a TOR switch to aggregate connections to from major network providers? For example, 2 or more 10GE ingress connections (pick your favorite CDNs) into one 10GE egress back to our router (which is at a remote location). We are worried that queue buffers are too small to handle the traffic going to the egress port. Thanks, Joe Lappa