Another convert to DocSpan...MM, you may be able to do a group buy on that stuff. I bet a few guys would be willing to split out a box. There may be a couple on CEF that may be interested too. You can see how DocSpan turns out in CEF. OhBee just finished a BHM Wizard that turned out really sharp!
Dan McEntee have me a few feet a few years back. I've bought a roll for myself since then, but that vendor is no longer selling individual rolls.
How much do you need? Aren't you getting ready to cover a 1/2A model?