I don't own a Revenger, so my comments are from observation rather than direct experience. I have been around quite a few RIBs though.
Revenger make fast, sporty RIBs favoured by racers. The design incorporates very tapered tubes, which give it a sleek look and cut down on wind resistance. The build quality and finish are good, but you are unlikely to find many used by rescue services!
They wouldn't be my first choice for heavy weather work -- but it depends on what your priorities are. If speed is your thing then a Revenger might be the RIB for you. There may be better heavy weather RIBs, but if you do get caught out in bad weather it's unlikely to perform too badly.