I think I will e-mail him. What I secretly want is for him to have it hooked up so that both levers activate the front brake (see
here). I understand that in theory there might be a time when you find yourself with one hand on the bars and an immediate need to brake, but that strikes me as such a remote possibility as to be negligible, plus the fact that if you're braking that hard on short notice with only one hand on the bars means that something's gonna go wrong. Anyway, I'll let youse know what Sean says (if anything).