Hi Roland;
Good point!
I am now beginning to think that they may have incorporated the ICSharpe (aka IC#Code or #Development) development shell (SharpeDevelop) instead into their product. This IDE is very fast and includes the same robust features as the VS shell. In fact, its the IDE adopted by the MONO development team who called it MONODevelop. A variation of MonoDevelop has now formed the basis of a product suite that Armeen has mentioned before - Xamarin.
Maybe Appeon should take a very close look at the SharpeDevelop IDE alternative to VS! 
Regards ... Chris