I have the same concerns. I've got a few containers ready for tomatoes, but not sure if it will be too moist for peppers. I'm keen to know if any members have had any success growing peppers. Their website http://www.globalbuckets.org/ has some very good ideas for automatic watering.I've tried it on a small scale (20x20x20cm pot) and it works very well... I was a bit worried that it wouldn't scale down - because I only have a little 8mm tube filled with perlite/peat that serves for "wicking" - but it's working great. The soil is moist all the time though, so I don't know if it's perfect for peppers, but the tomato I'm growing seems to love it.
Indeed it is...I picked up a dozen at the end of last season ...for $2.00 each.Is that a "topsy turvy" in the bottom right of the last picture? How do you like that method so far?