University of Utah reported that they were involved very early on with PS and ended up developing a hybrid model. The message agent does not scale for something like student registration. They are using a distributed message agent server model with fifteen servers handling the message agent. They developed their own web front end, which was similar to their previous design. Their read-only applications go directly against the database.
More complex queries go through the message agent.
This became a necessity when they discovered that more than 600 SQL statements are generated when doing an add to the database. Utah made a presentation of their web access at the PS User Conference. Their materials may be viewed through the Customer Connection, presentation number 1311. It now takes fourteen seconds to do a database add which they mask by using a seven second message to the user. So far they have received very little negative feedback.