I have a tin of proofide, but I haven't ever used it. I do spray the bottom of the saddle with that spray on shoe water-proofer, though. Because, that really does* keep the leather from getting wet.

But, if you use the saddle, you're going to get enough body oil on it to keep it from drying out, right?

And the sweat and weight is going to break it in.

Unless it's uncomfortable straight from the box, I don't know why people use it. I've never really heard anyone saying that it was uncomfortable during the break-in period and then was awesomely comfortable. People seem to either love it or hate it from day one.