Alton Brown (a generally trustworthy guy) recommends placing eggs on a moistened towel directly on an oven rack in a cold oven, then setting the oven to 320°F (160°C) and coming back 30 minutes later.
Even before I tested the method, alarms were going off in my head. Recipes that call for cooking in an oven while its temperature is in flux (by either starting the oven cold or turning it off in the middle) are never reliable. Ovens are bad enough as it is—most home ovens swing their temperatures by as much as 50°F (10°C) above and below their set temp, assuming they were calibrated well to begin with). To add the confounding variable of how efficiently your specific oven heats or cools on top of that is asking for trouble.
What may work perfectly in one oven probably won't in another. The method certainly didn't work in mine. One batch heated too quickly and came out with dark spots on the shell and a pale brown color in the white. For a second batch, I lowered the cooking time and managed to get eggs that looked okay when split open, but they were a PITA-and-a-half to peel, which makes sense. Remember: Cold start = harder-to-peel eggs. It doesn't matter if it's in the oven or in a pot of water.
Ovens are inherently unreliable because there is no physics-based indicator or limiter of heat. A pot of simmering or steaming water, on the other hand, stays reliably at the same temperature (assuming constant atmospheric pressure), which means that no matter whose kitchen I'm in and no matter how powerful their stovetop burner, so long as I can boil some water, my eggs will cook reliably, time after time.