I guess 2 pinkies a week is okay, but it's not what I do. I feed Charon two pinkies every 3rd feeding (the other 2 feedings I give him one at a time).
The venom is thought to be used to aid the consuming of inflating toads. No one knows yet if a Western Hognose gets its venom from birth or from the toads they eat in the wild but there's one way to find out: get a young captive-bred Western that has only eaten mice to bite you (which is pretty hard since the only possible way to get bitten by a Hogger is if you scent yourself) and see if any swelling occurs. You and I might not want to try that, but I'm sure there's someone out there who's willing to try.
About the name: Come on! His nose isn't that weird! It's not even crooked!