No trouble at all, James!
The initial download that LUA 2.x must perform for any product is always quite large - several GB. After that, its daily downloads are only the same size that one client/endpoint would make. If that one LUA download prevents even 10 SEP for Mac clients from making duplicate downloads, 30 days per month, it saves a great deal of bandwidth.
Once per month, when new "hub" definitions are released, there will be a large download by LUA (again, measured in GB). That is the same with all SEP and SAV products, though, not just SEP for Mac.
Admins will have to weigh the options for "One rare very large download from the internet and then small daily downloads" (LUA) versus "Many duplicate downloads from the Internet" (all SEP for Mac clients going straight to the Internet). Which option is better for the bandwidth really depends on the number of Macs.
That's my logic, anyway! &: )