I'd really like that exact pen with a more flex nib to play with, if something like that exists.
I EDC one, with Waterman serenity blue long cartridges. It’s a great match.
Metropolitan is a great pen with a great nib, but nothing beats a Lamy in the long run for me.
There are plenty of pens available for less in countries where children are required to use them at school, starting at around $10 in the UK. Triple the price for a metal barrel, case, perhaps better manufacture etc? OK.
I do not have Lama Safari, I'm sure it's a nice pen but Pilot Metropolitan certainly feels much more expensive and a "grown-up" pen rather than just a writing implement.
ps I did not know students in the UK still are required to use fountain pens, my sincere condolences. I think teaching handwriting is important but fountain pens seem like a step too far.