Multiple MonetDB nodes behind HAProxy loadbalancer

Hi all, We're thinking about running multiple MonetDB servers with the same databases behind a single HAProxy loadbalancer (see attached diagram). Would this be a good idea? bad idea? Any experiences with this kind of setup? We are thinking about this route primarily so that we can bring a new dataset online during business hours without disrupting end-users who are running queries from our application. An additional benefit would be the ability to handle more load and enable horizontal scalability. Any insights would be much appreciated! Best regards, Dennis