Today my test char has primary guild G1, no permissions. And is a member of G2, no permissions. The test char walks onto a beacon aligned to G2. Again, no footfall is generated.
Guilds are completely useless because they prevent footfall.
Lets assume you run a mall and assign the main beacon to a guild. Now, many people who have a shop in that mall are a member of that guild. You most like will get puny footfall. @majorvex, did you try to not align the streets in the gyosha mall to a guild?