Unique, yes, and I'd even go as far as to say it's somewhat out of place on a Unix-like OS, but I have an easier time remembering "infile, outfile, block/batch

Unique, yes, and I'd even go as far as to say it's somewhat out of place on a Unix-like OS, but I have an easier time remembering "infile, outfile, block/batch size" than, say, arguments for tar due to its simplicity. I wouldn't call it bizarre because it's extremely straightforward.