One of the primary things I use screenshots for is sending to colleagues on Skype. I tried configuring Export to send to Skype, but apparently that isn't working correctly. When using built-in OS X screenshot abilities, it was trivial to find the file on my desktop and send it to a particular skype contact. With Voila in the mix, it takes a few more steps. If native support was added for Skype, this would be even better than my original workflow!