It's always great to have competition, as it makes products more perfect. From my side, I would happily agree to split the bounty between the developers of the most stable and easily usable wallets. There should be a voting at the 1st of July (?) of the best GUI, picked by the users.
1. Yes the bounty is still open.
2. Any contested bounty awards will be voted on by the identified contributors. There can definitely be multiple winners as there are likely to be for the pool bounty.