Interesting. This looks like the equivalent on Amazon US site
I wonder how it would work since the RTS has some orbital motion, whereas the LS 130, the Festool sander that normally handles profile work, only has linear motion and so will stay in line with the profile.
There's a 15% coupon being offered, so for $30, it's not too much of a loss if they don't work that well with the sander, especially since they will still function as hand sanding blocks.