Running on EC2 -- /var/lib/pulp on S3?

My client has requested that we run Satellite on EC2. The partition sizes are fairly straight forward. What I want to know is, is anyone using FUSE to mount an S3 bucket for /var/lib/pulp?

For that matter, is anyone using FUSE to mount S3 at all?

For the record, I'm thinking the answer is "no, don't do it," but I know my client will google this project: https://github.com/s3fs-fuse/s3fs-fuse/wiki/Fuse-Over-Amazon and I'd like to refute this if it is truly a bad idea.