Yup, works fine. I would suggest that you line a five gallon bucket with a heavy trash bag, then put the litter in. Keeps the bucket cleaner when you start running low on litter.

If you have access to a router and want your wife to really appreciate you, buy a cheap toilet seat, center it on the top of the bucket, use a pencil to mark the shape of the bucket, then use a router bit to make a groove the size of the top of the bucket in the underside of the toilet seat. That way it will sit on the bucket without sliding...