I'm also very interested in this. My client has issues with how the table is displayed (many columns / scrolling etc).
The best workaround currently suggested in this forum & JIRA so far is to put the table in a div with overflow-x: scroll, however to do this you have to specify a large table width. This causes some issues such as the reRender spinner not being visible as it's centered on the table.
Horizontal scrolling is currently a feature request for 4.0 : https://jira.jboss.org/jira/browse/RF-4871