Thanks! I only wish I could use "Bypass Paywalls Clean" on Mull; even if I enable the Iceraven addons it just gives me "Bypass Paywalls for Firefox" which isn't as effective.
EDIT: I was also slightly alarmed recently to discover how many cookies Fennec was retaining; I'd like to be able to keep the one for BH so I don't have to log in every time, and maybe a few others, but not if I have to keep all of them.