USB host keyboard

I think the upcoming Kordbot will be able to do it, but is there any other MIDI controller / controller keyboard that has USB host functionality? i.e. can plug the OP1 in without a go-between?

kilpatrick sequencer has usb host feature

Also check out

If you couple it with a 5v usb battery it makes a nice portable solution to usb>midi

Upcoming Parva synth does usb host as well