Registering endpoints with EndpointPublisher using same context results in DuplicateServiceException

Deploying attached sample creates the following error:
ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/sample]] (ServerService Thread Pool – 55) JBWEB000289: Servlet Hello threw load() exception: org.jboss.msc.service.DuplicateServiceException: Service jboss.ws.endpoint."ws.deployment"."org.jboss.servlet.hello.BaseWebService" is already registered
at org.jboss.msc.service.ServiceRegistrationImpl.setInstance(ServiceRegistrationImpl.java:154)
at org.jboss.msc.service.ServiceControllerImpl.startInstallation(ServiceControllerImpl.java:227)
at org.jboss.msc.service.ServiceContainerImpl.install(ServiceContainerImpl.java:560)
at org.jboss.msc.service.ServiceBuilderImpl.install(ServiceBuilderImpl.java:307)
at org.jboss.as.webservices.service.EndpointService.install(EndpointService.java:193)
at org.jboss.as.webservices.deployers.EndpointServiceDeploymentAspect.start(EndpointServiceDeploymentAspect.java:50)
at org.jboss.ws.common.deployment.DeploymentAspectManagerImpl.deploy(DeploymentAspectManagerImpl.java:131)
at org.jboss.as.webservices.publish.EndpointPublisherImpl.publish(EndpointPublisherImpl.java:123)
at org.jboss.as.webservices.publish.EndpointPublisherImpl.publish(EndpointPublisherImpl.java:102)
at org.jboss.as.webservices.publish.EndpointPublisherImpl.publish(EndpointPublisherImpl.java:95)
at org.jboss.servlet.hello.HelloWorldServlet.init(HelloWorldServlet.java:78) [classes:]
at javax.servlet.GenericServlet.init(GenericServlet.java:242) [jboss-servlet-api_3.0_spec-1.0.2.Final.jar:1.0.2.Final]
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1194) [jbossweb-7.2.0.Alpha5.jar:7.2.0.Alpha5]
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1100) [jbossweb-7.2.0.Alpha5.jar:7.2.0.Alpha5]
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3591) [jbossweb-7.2.0.Alpha5.jar:7.2.0.Alpha5]
at org.apache.catalina.core.StandardContext.start(StandardContext.java:3798) [jbossweb-7.2.0.Alpha5.jar:7.2.0.Alpha5]
at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:156) [jboss-as-web-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
at org.jboss.as.web.deployment.WebDeploymentService.access$000(WebDeploymentService.java:60) [jboss-as-web-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
at org.jboss.as.web.deployment.WebDeploymentService$1.run(WebDeploymentService.java:93) [jboss-as-web-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [rt.jar:1.6.0_30]
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) [rt.jar:1.6.0_30]
at java.util.concurrent.FutureTask.run(Unknown Source) [rt.jar:1.6.0_30]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) [rt.jar:1.6.0_30]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.6.0_30]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.6.0_30]
at org.jboss.threads.JBossThread.run(JBossThread.java:122)