[aeaston]

From the pictures, it looks like it's being used more or less just for cosmetic reasons to hide the marks where the original toerail would have been. If all those fittings (stanchions, blocks, cleats, etc.) that sit on the toe rail are actually thru-bolted right through the toe rail and deck, then I would think it would be fine, since the strength would actually be coming from the deck underneath, with the starboard acting as more of a spacer.