The program has been out for quite some time, (With small improvements added) and used to be demonstrated at the UK keyboard festivals, although it seems to have dropped out of favour these days.
Its 2 main problems are that it is a stand alone program, (Not a VST) and therefore is difficult to integrate with other programs and controllers, and secondly it uses soundfonts, which being old technology means that all the other modern theatre organ samples on the market leave it for dead.
If it was converted to a VST and could import other samples I am sure it would do well, but for the present I am afraid it’s Nice Try but Could Do Better.

Bill