I think it would be very frowned upon( if not worse), by the Realtor at the Open House!
The host of the Open is a buyer agent who will be available for any buyers who need representation and who have visited.
If you want to increase your business via Open House, you should offer to host them for agents at your Re/Max office there in New Jersey.
Most busy listing agents don't have time to host every Open House they are holding, and will be very happy to allow you to put up all the signs, bring the food and show the home to potential buyers. Your pay for doing this, is the opportunity to meet potential buyer clients.
Best of luck with your Real Estate business!