Integrating existing proxy with third party security system

[v21]

In Apigee Hybrid we are have a requirement of integrating our existing proxies with the third party security system. Wherein we need to send the request and response details of each proxies to that third party security system via javascript policy without effecting the actual traffic.

We are planning to enforce this functionality using flowhook's, so we wanted to understand if its a good approach (OR) there would be any issues due to the flowhook's.