I like how it turns out using this method, although I suspect that there might be some bean varieties where it wouldn't work out. I tend to brew with a moka pot and the resulting cup has a delightful depth to it. You can cut the time considerably by raising the oven temp.

I generally don't do that because I tend to get a less even roast and/or end up with a darker roast than I want due to inattention. If the human element in my equation were more reliable, I'd be roasting at well over 400F.

Here's a follow-up thought that you can take or leave. Having tried both head to head, I think that there is a flavor difference between what I do with my oven and a good high-temp low-time roast. Personally I think that the difference is minor, especially when you compare the flavor of either method to most of the coffee that you can buy from a grocery store. I suspect that the high-temp low-time issue is emphasized online because (if it is accepted as both true and important) it favors the purchase of specialty gadgets. Please try both and draw your own conclusions.