Before you jump to any conclusions about steel vs gold, I would also like to add that the steel writing experience was quite nice. I definitely prefer Medium nibs (in general) to Fine nibs, but the Deep Yellow VP with the steel nib wrote well and I didn’t have any problems with it in the 3 months that it’s been inked up. I’ve used it on 10 different occasions (thank you, FPC, for that handy data) and never had any hard starts, despite Brun Eiffel not being a super wet ink. I don’t love the EF VP nibs (or most EF nibs, for that matter), so this steel Fine is about as fine as I would want to write with on a regular basis. I was very pleasantly surprised at the experience and am glad I bought it.
The “special alloy” nib Pilot Vanishing Points are also available in Medium (I didn’t see any when I was originally shopping for it) as well as Fine, and seem to only be available in Black, Dark Blue, and Deep Yellow. I would assume that the Medium steel nib would feel similar, e.g. finer than the gold Medium, with a stiffer/firmer writing experience. To my knowledge, these steel nib Vanishing Points aren’t sold by US retailers besides Amazon, which was where I ordered mine. Prices range from $75-95 before sales tax. Considering a VP nib unit alone costs about $90-110, this is a pretty good way to try a real Pilot VP (not clone, homage, etc) to make sure you really like it.
(Disclaimer: I purchased mine on Amazon last year and it seems to be currently unavailable in Fine in the Deep Yellow. Here is a non-affiliate link to the Dark Blue VP, Fine, Special Alloy.)