As a general concept this north/south distinction clearly works. I've been to South Carolina and seen how hot it can get there and the shirtsleeve types are more suitable for summer campaigning in the South. But of course it gets hot in the northern states as well and it's worth remembering that two of the best known southern theatre battles, Cowpens and Guilford Courthouse, were fought on damp, cold days in January and March respectively (I've seen references to the temperature at Guilford as being around 45-50 degrees Fahrenheit or 7-10 degrees Celsius). So another way at looking at these militia figures is to think of them as being suitable for "hot" days and "cold" days. The Perry southern militia figures with bayonets are perfect for representing Continental infantry in battles in the north such as Monmouth, which was fought in June on such a hot day that troops on both sides collapsed from the heat and many Americans took off their uniform coats and fought in shirts and waistcoats. Bunker Hill was fought in mid-June and while I've experienced first hand how utterly freezing Boston can get even as late as April, I expect by June it's usually reasonably clement. Don Troiani's excellent painting (see here) of the "whites of their eyes" moment certainly has men in coats and shirtleeves Of course, on the tabletop none of this really matters - militia are militia irrespective of what they're wearing - but the choice is there if you want it.
too). I painted the officer in the dark blue suit Troiani uses for a similar-looking chap in his Bunker Hill painting - I'm not entirely sure which of Stark, Warren or Putnam this person is supposed to be (if any of them - I'm assuming the other Perry officer figure is modelled on Troiani's William Prescott, the person in the long, grey coat).
There's then the question of flags and whether militia carried them. I've already used my "Bunker Hill" flags (on very early units that aren't anywhere on this blog) so selected one of what GMB call "ex King's". I understand that this type of flag would have been a pre-war militia or provincial flag with the union jack in the corner removed. I think it looks pretty nice. The photos aren't the best, I'm afraid. I find taking shots of firing line figures can be tricky to focus correctly.
16 figures. Painted August/September 2013. Flag from GMB.