I have the Rivco driver boards on my 08 R3 Standard. Personally I wouldn't change from what you already have. I like my boards but the only reason I went with Rivco is specifically because I wouldn't have to change out the rails and break line and of course, way less expensive. If I had it my way, it't be the Triumph boards all the way.
I suspect you want this because then they'd match the passenger boards with the Chrome and black rubber bits. I would look to see if you can emulate the look in other ways.
Just my thoughts... I think you won't be too happy going from the Triumph boards to Rivco.