There are times I'd like to use IFW/IFL etc. to perform backups of specific files/folders (possiby with exclusions in sub-folders), and would like to use IFW/IFL in a "Start With Nothing" mode, and specify what to include in a separate file (ie. by passing new command-line parameter, /inclist:<Inclusion_List_File.txt>).
I know the same can be achieved with /exlist:<Exclusion_List_File.txt>, but it can be harder for some jobs.
Also, yes, it could be achieved with normal backup/copy utilities but, again, for certain workloads a sector based approach would be faster (ie. for lots of files/folders, particularly if small).