How to write a varbinary(max) to SQL Server Spatial?

For compatability-reasons with Geomedia I need to write an additional field of the type "varbinary(max)" to all the tables in our SQL Server Spatial database. In FME I can set the varbinary datatype, but I can't set the "max" value. I've asked around and so far it seems the only workaround is to create the field with the datatype "image" and then alter the datatype directly in SQL Server afterwards. Any ideas on how to do a better workaround?

 CREATE TABLE dbo.blob(col VARBINARY(MAX)); INSERT dbo.blob(col) SELECT NULL; UPDATE dbo.blob    SET col = (SELECT BulkColumn      FROM OPENROWSET( BULK 'C:\Folder\File.docx', SINGLE_BLOB) alias   ); SELECT DATALENGTH(col) FROM dbo.blob;