I started with OB after being linked to Eliezer's series on quantum physics, and I've been absorbed with OB and now LW ever since. I'm more of a lurker, and I've never really commented at OB for fear that my input would be deemed useless. Perhaps I'll begin commenting here on LW now that we have a voting system.
I would say that a religious person dismissing cryonics is at least an order of magnitude more likely than the scenario you proposed.