Aterpster - People end up on the IAP high and fast all the time. It's not a perfect world out there, ATC got busy, Center got busy, the pilot didn't descend fast enough, etc. How about the pilot never intended to land at El Monte, but had engine problems, or a passenger is having a heart attack.....so he's right over POM at 15k and wants down, they give him the clearance....Now he's scrubbing off 6k fpm and 300kts to 10k then 250kts and 6fpm to 4k for the inbound course. I could sit here and come with probably another 30 scenarios where I would be over an airport, I am high, fast, and I want down.
Your assumption that you wouldn't end up over POM at 10k and 250 is naive and inexperienced.