About hierarchyid datatype

Now the method:
    dbcoltype()
returns SYBBINARY for hierarchyid datatype. in result no way to cast such
data to the string like '/1/2'

The CAST function can convert hierarchyid to varchar:

http://technet.microsoft.com/en-us/library/ms187928(v=sql.105).aspx

May be is not so hard to implement the proper behaviour  for dbcoltype()
and dbconvert() functions to have ability to fetch data in "readable" form?

Thanks!

-- 
Best Regards!