I think you have the pivot mounts? I haven't seen them offered for years, so I think they stopped making them. The inherent problem with the basic idea is that it is difficult to retain the zero if you can detach or partly detach the mounts. To work, such a mount must be made with very tight tolerances and the design must allow it to be used without wearing it to the point of getting out of spec. Eventually, flipping them back and forth enough will do that.
If yours works great, it doesn't matter what the gunshop says about them. (Likewise, it didn't matter how great the gunshop said they were if they didn't work when new.)