I don't have one, but Pete R does. I believe Umarex originally marketed them as the RWS 225, but they didn't catch on. That may be just because they didn't have the Umarex name attached to them, or because of the success of the newly-launched CP88, I don't know.
Sportsmarketing are now the UK disties, and in it's UK guise, it's marketed as the Reck Police 225, although you can still buy it on the continent or from the US as the RWS 225. It takes the standard Umarex 8 shot mags.
I've spoken to Pete about his and he loves it - this is what he had to say:
I was going to get one, but had decided to trawl the German sites because I prefer the RWS version - the white "Reck Police" on the SMK variant looks a bit naff, to me anyway.Originally Posted by Pete R
Hope that helps,
Mike.