Experience with Cloudformation Plugin for Jenkins

I do not have an experience with the above plug-in but I did wrote few Jenkins projects in the past which used cloudformation personally I try to avoid using plug-ins mainly because there is always a chance that they might cease to exist.

For jenkins I would recommend to use the native AWS CLI (Install AWS CLI on the Jenkins instance) , you will make your customer happy as they will able to deploy cloudformation stacks pre and delete them post build , using our native API as well as use services such as S3 into the build cycle