(Shades of the urban myth of tattoo artists who have a piece of calligraphy flash which actually says "I am a moron" or something like that, which every so often some one is supposed to ask "hey, could I have that?" without asking what it means.)
Not just that I'm offering this at such a stage (at least he's only starting to collect orders for the definitive production), but - egad!! - this is likely to be a bit of calligraphy work that I'll be looking at a very, very long time, seeing as how my dojo-mates are likely to keep these shirts and wear them about the place for years to come....
Yeah. I hope he'll be duly appreciative. Good on you, anyway.