if this can help mr Huet is doing switchers ( huet -trains.). A little bit expensive ( but it worth it) but it existe.
Unfortunately, Mr. Huet is not known for his ability to deliver promised goods or to communicate why they aren't being delivered. There are a number of people on this forum who paid Huet for switchers, haven't received them, and gotten no response to many emails. Some have been waiting for 2-3 years or more.
BTW - whatever happened to the Z scale switcher that MTL was working on awhile back? Vaporware? Not trying to knock you, but as I recall, MTL did say they were working on it and we haven't heard anything since. If you still have the plans, why not collaborate with AZL on this? I know a lot of people have been waiting for a SW1, SW2, 1500, or other injection molded switcher. I think a joint project such as this would benefit both companies as well as the fans.
It is getting a little bit off topic but, only a switcher from MTL would make sense, unless it is easy to upgrade to MTL magne-matic couplers.