This system is new and as far as I know Straumman can fabricate abutments. We just worked on BLX, WB. I called around different abutment manufacture but seems like for now, nobody is doing it except Straumman. Hope someone has it, Good Luck!
My lab has been using the Straumann BLX system for a couple of months now, as it is fairly new. As far as I know you are able to do In-House screw retained crowns, using ti-bases for the BLX system. Actual titanium abutments need to be outsourced directly to Straumann as they are the only ones approved to manufacture it.