Deliver views from Amazon S3? Thoughts?

[eluser]otherjohn[/eluser]
Hi all,
As I am building this SaaS cms I am looking at cost and filesize management. With the potential of thousands of client view pages to store (custom designs, templates, etc) I am looking at storing those views on amazon S3 storage.

Is this possible (I think it would be) and are there any concerns with this?
The site itself will be on a an amazon e3 server.

John