Hobbywing could well be the manufacturer. They knock out their own branded range of gear which is simply a quick lets get the product to market to range and sell them to the masses!
Orion may simply have developed the R range of speedos and got Hobbywing to manufacture them, who better to make your speedo than someone who makes tons of them anyway! As long as its to your specification (software and physical parts) then it should all be good.
So, long story short, even if the manufacturer is Hobbywing, it really doesn't matter. This is a product designed and manufactured to Orions specification and with such a good name, they wouldn't dare tarnish it by releasing a new range of products that are no good.
Edit: (PS, I've got one myself. Recommended by people who have actually used them)
Re-edit!: I don't have any info on who actually makes them, just simply highlighting the fact that it doesn't actually matter
