I wonder, does striking it make it wear faster than ferro?

"... plan to smooth its exterior a little with sand paper/files..."

If the case has been anodized and you work it over with sandpaper or whatever, be prepared for it to turn everything it touches black (or dark gray)...

I’ve had it with you guys posting all this stuff

I only have so much money and I keep seeing new toys like this that I want…

While on the topic of firesteels, here is an article on their use worth reading.