Not only have I ("bitcoinserver.nl") opened a dual funded channel to lightning node "the_holy_cheese_grater" a couple of months ago:
bitcoinserver.nl 501,873 <-> 498,126 the_holy_cheese_grater 50%-50%
but it's now also possible to open another (in this case single funded) channel next to it:
bitcoinserver.nl 986,152 <-> 0 the_holy_cheese_grater 100%-0%
That wasn't possible until recently. This is a great feature! It means that if someone opens a channel to you, you can return the favor and open an equally funded channel without any negotiation (as with "GVA-LIGHT", see bitcoinserver.nl).