[Habibi Jones]

I just think its quicker and easier to shoot a bomb on them than trying to hit them with a field. Maybe its just because I'm used to doing it.

It would be faster if you were fast enough to drop the bomb and arrow it before their recall went off. Chances are, without a nice macro to do all that for you, you aren't gonna do it in time.
I suggest you scribe like 5 firefield scrolls and test it with another player. If they invis and cast recall immediately after, you can land a firefield scroll on their tile (which hits them) if you cast the firefield within ~.5 seconds. It's a pretty neat thing, has a lot of potential to counter invis potions, but sm0ke has sand in his trap and can't see past his own skull.