I'm no expert, but I'll throw down. I don't have this watch, but have been considering it as well. I have the original model 186 Arktos GMT which is powered by the same movement with the same GMT module. THe movement is fine and for the last year has kept better time than any of my other swiss powered watches.
The problems you'll see with the rep of the 089 is the wrong date font, shoddy glue ring around the cyclops, the triangle at the end of the GMT hand is too big, and the minuite marker at the 9:00 position is completely missing. That being said, the rep DOES come in a Ti case with an anthricite dial (don't know if it's real anthricite or not, but it looks good).
If you get this rep, you'll be in good company because I think I am going to get one too.
Bryan