NLB and DNS

Does anyone here use NLB to load balance two or more DNS servers? Does it
work and does it make sense to use? We're in the process of migrating to one
domain which means no more delegated zones. So we'll be migrating to one
zone and I'd like to know if I should/can use NLB on DNS requests because of
the amount of traffic it's going to have to be able to handle.

Thanks for any assistance!