will there be async/await support for the async-methods? (Your Task implementation isn't awaitable)
You're confusing two different Chilkat API's...
Be sure to look at the reference documentation for "C# WinRT" or "VB.NET WinRT" instead of the non-WinRT documentation for "C#" and "VB.NET"
It's possible to await your Chilkat.Task Implementation (see http://blogs.msdn.com/b/pfxteam/archive/2011/01/13/10115642.aspx) Would be nice.