I get it but I don't like it. I like having as many bites at the apple as possible.
Doing this, it only pays off if you make that first one. If you miss it then you have to try another one just to get back to square one. And you're screwed if you miss both, and we're talking a fifty fifty play.
If you play for the tie you might still have a chance at the end of the game to win with a last second FG depending on how things play out, and if you go to OT you will have at least one and maybe multiple chances to win it.