Yeah. I dropped it on my quads the very last rep. Once I got it up I tried to walk it but there was no way at that point.
Have you tried liquid grip? My gym frowns somewhat on chalk and I was thinking it may be a good alternative.
I have tried it once and didn't really like it. the chalk didn't really stick to the bar or my hands. it's very possible I just didn't get enough of it. my buddy uses it though and he loves it. just keep the chalk inside your bag at all times and keep your bag under the bar if you're wiping the bar down with it.