setup multiple load balancers in front of application cluster

We currently have a load-balancer in front of a web-application cluster. We are experiencing connectivity issues in the app and based on tests, it seems like the load-balancer could be the culprit. We would like to rule out the version/model of load balancer we are currently using, by setting up a newer version/model of the load-balancer, while leaving the current one intact. So, users experiencing the issue will be given the new load-balancer URL, and most of them who are not having the issue will continue using the current load-balancer. We will see if sending users to the new load-balancer fixes their issue.

My question is - is it possible to setup 2 load-balancers (one current, one new) pointing to the same web-application cluster? Are there any issues with this setup?

Thanks.