Hello Gregger,
The forum operates pretty openly around here, so you will get the opinions of a wide variety of collectors ranging from die-hard Invictaphiles to regular Invicta critics. Ironically, there aren't a lot of active forum members here that own a Reserve Pro Diver, but several here own pieces from the Reserve Speedway collection and can offer their thoughts/experiences with those very nice watches.
This is an often-discussed topic because the regular Swiss Pro Diver is a great watch in its own right and some feel that if you spend that kind of money on a dive watch, you should put it toward a "prestige brand." There will also be those have never even seen a Reserve Pro Diver but have already made up their mind that they are not worth it. Certainly they are entitled to their opinion, but I question their motives.
I think you will find that most people who actually own one will agree that it is a significant upgrade to a regular Swiss Pro Diver. There are a couple of good reviews on our forums and evidently more coming soon. I own a Reserve Pro Diver and believe that it is well worth the money, but don't take my word for it. The best advice I can suggest is to order one so that you can see it in person and decide for yourself. You can always send it back if you are unhappy.