I received mine this morning (ordered within minutes after receiving the email from ToolNut). This isn't any sort of extensive review, I used it for all of ten minutes, sanding in between coats of finish to knock off some roughness on the Bistro table I built.
As an FYI, I also have a RO90 and a RO125, which are my go to sanders. I used it on speed 2 with Granat 360 hooked up to my CT26. Not much to say about it other than it did the job as expected. No jumpiness, easy to maneuver, lightweight, felt comfortable to use.
I'll put it through its paces more when I get to whatever my next project is, using it on unfinished wood.
I also ordered the dust bag, have not used that yet but it may come in handy. Haven't decided whether to change the connector on my CT26 yet, the hose stayed put with the standard friction fit.
For the bargain price of $99, this was well worth it and I'm glad to have added it to my collection of Festool products. Now to figure out what to buy next with the voucher.