As per Mr. Conway, he'll sign shirts at conventions. (Great! I live in SC.) Better hurry, fans. He's 89 or 90. My father also is, so I'm very aware of just how frail that can be.
I ended up so passionately invested in the campaign I spent > $700 (including donations, but every cent of profits went to BLM.) Gave away the promised four shirts (see comments #26) and am sitting on enough to wear for the rest of my life. (But most are really great quality, and should last for many years.) Actually, despite claiming "minimums", even #25 printed. (I have 60% of the world's total of ordered shirts of that "less popular" design.))