As already has been said : AS 'works', but Blizzard will throw you out after several good updated.
See my latest try (last week) for an example :
http://www.wowroster.net/Forums/viewtop ... rt=15.html
Very important is also : does your HOST offer all the goodies that are needed for AS to work ? Over here, in my country (France) Hosts aren't expensive, but the good one still ask about 10 Euro a month for doing the job.
About AS : why not asking very friendly to your Guild members if they can install a simple addon (they all use addons, right ?)
If they can think about all the time YOU put into your project.
If they could invest in a 30 seconds job : upping a small file to your (their !!) WoWroster ?
I did that (ok, I admit, I do not guild anyone who says to me "I will NOT do that" - but that's just my politics) and it actaully works !!!!!
Proof :
http://roster.papy-team.fr