I have one in .25, not exactly the 400 but one of the more modern fancy derivatives. It is beautiful with a blond-ish stock. I think it is a Fusion Star or something. I have not really given it a chance to shine but it was clearly going to be a challenge to shoot really well. We can say I "haven't found the right pellet" but it migrated to the back of storage and has not gotten it's share of daylight,
I cannot find the archived photo thanks to the magic of Photobucket. I should just get the sucker out and shoot a new one but my family is pressuring me to do non-AG stuff at the moment.
The RWS-94 was indeed the Cometa 400, and I have one of those too in .22, and it is one of my favorite springers. I used to have two, but sold the uglier one. They both shot really well and had excellent handling characteristics. This was a fad gun that stood the test of time, IMO.
I have a couple of other Cometa models including the Indian pistol. I tend to be a Cometa fan.