Scalia and Stevens must have gotten into it quite a bit. I got the imprerssion that Scalia may believe Stevens to be a largely incompetent buffoon.
That being said, I as still a little disappointed in the opinion. While I am very glad as to the affirmation of the individual RKBA, I am a little concerned and disappointed in the rationale behind overturning the specific ban on handguns.
That handguns are common is all well and good. That they would be commonplace amongst the militia if we were all called up and organized is also true. But to argue that they shouldn't be banned because they are an arm that would generally be considered widely available and commonplace within the militia is a little odd.
Machine guns would probably be more common today if the tax stamps were still issued. Since swords are no longer common among the populace, does that mean that they can be banned? If commonality is the criteria to determine what arms can be banned or restricted, and which ones can't, at what level of availability does something become, and thus militia capable, arm? Since there are a ton of AR-15 and SKS owners out there, are these weapons currently beyond the reach of a ban? What about garands? Since they are semi-automatic rifles, similar to other semi-auto rifles, would they be protected as a member of that class of arm?
If commonality is the defining characteristic, then we all need to go and buy as many different rifles, pistols, shotguns, etc. as possible. If we can show that these classes of weapons are all very commonplace, there can be no bans.