Thank you all for the comments. I will bite the bullet and pick up those switches. I like the diode suggestion as well, so I'll grab some of those as well.
One more question, though. Won't I need a 3 pole switch for my op amp setup? I do agree that dual pole switches are cheaper than the options I linked. However, I was thinking there would need to be a pole for +, -, and ground, which is why I included the links above. If there is a way to do this with a dual pole switch, that seems much better/cheaper.