Does anyone have a ST nib on any of their Pelikans? How does it right, is it like a F or EF that is very flexible for line variation? How do you like it? Looking to pick up my first (pen period) vintage pelikan, its a 400nn with an ST nib. I like that I haven't seen an ST nib anywhere else before (in the short time I've been looking).

At the risk of having some bidding competition here it is.