We all know it works .. That's not the question. The question is what paper MCSE+I student is consulting them stating it is a good idea. Especially since he/she is also getting less work out of it by only installing one server and not two. You may really want to re-consider your consultant as not just uninformed but a bad business person that probably wont be around for too much longer :).
If I had my choice I would probably put 3 servers in every client we do. Considering even a base server of any importance is 2-3k, and our installation is about 2k, it gets pricey pretty quick and not everyone can afford it. I could always find ms papers to support putting everything on its own server. I would be hard pressed to find one that recommends all-in-one. Oh wait! I could sell SBS 2000 :) List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
