One thing I'm wondering, in looking at it, is whether I could simply cut off/separate the metal "key part" from the plastic "fob" part of the integrated key (right at the point where the metal key meets the plastic part), and then somehow attach/glue some kind of material to the raw metal key part to make it more like a normal key. Thoughts on that idea?
In fact, it looks like the metal key part might be removable from the plastic fob part if there was a way to open up the plastic fob part cleanly. I don't see any screws or anything....?
I'm just loathe to take a hacksaw to the key, split it into two parts, and then find out I just permanently messed up my key

Alternatively, is there a way to buy a 2009 replacement key that doesn't include the plastic fob part for keyless entry? If so, then I guess I could just buy that, cut off the metal key part of my existing 2009 key, and just use the remaining plastic piece as my separate keyless entry fob.