Has anybody looked at Proto? They look like Mac angle wrenches with the "V" cut, I know Stanley owns both companies. I haven't had a chance to look at prices or dimensions, was just on MSC and stumbled on them. They were 15°/60° though,OP was looking for 30°/60°.
I picked up a couple of loose Martins (the usual 10mm and 13mm). They're good, though 60/15. Not too helpful for the OP, I know, but for completeness...