I've never grown this one myself, but I've read quite a bit about it, and this is what I've gathered:
-Duckfoot is basically an "outdoor only" strain, apparently it doesn't do too well under artificial lights.
-Grown outdoors it can be potent.
-The webbed leaves tend to go away late in flower, and the plant will still look (and smell) like cannabis if you're close to it. In other words, the "stealth" effect isn't quite as good as you might hope. An auto purple webbed duckfoot, I think, would be the 'ultimate' stealth plant.
-Duckfoot isn't the only webbed strain; there is also some Hawaiian one.
-The Australian "bastard" cannabis, is a bit different, apparently it has completely unserrated leaves that curl, to the point where this plant can barely be recognized as cannabis at al. I've heard that unlike Ducksfoot (which can be found outside of Australia) the ABC genetics are fairly tightly held onto, so good luck finding any. Also, these genetics are apparently not that easy to work with, so even if you can find a plant, you're unlikely to be able to cross it with your favorite OG then make stealthy "OG bastard cannabis F2"!
You can get some sense of what these look like here:
https://www.rollitup.org/grow-journals/299944-heaths-dizzy.html#post3751014
And you can read about "Bindi" the Australian Bastard Cannabis here:
http://www.cannabisculture.com/articles/1651.html
Edit:
By the way, if anyone knows where a guy could get some ABC/Bindi ceeds, please let me know.