So, I have a webapp with a fair amount of JSPs, servlets, alot of which are using IceFaces. Obviously, most of this will have to stay in Tomcat.
However, I\'ve been
I agree except in two circumstances
Tomcat's SSL using JSSE is noticeably slower. There are native versions that can be plugged in, but that tends to be more painful. In general the SSL is a bit less straightforward than the well-understand Apache Httpd server
Fronting with an HTTpd server gives more flexibility re virtual web hosts etc. Tomcat is not as flexible in this regard. Unsurprisingly it lacks all the options in Apache :). An obvious nice one is built in compression of static files is very easy to add in Apache. It's not hard in tomcat extra, but it's more work.
You are mistaken. Apache Httpd Server is a totally different beast and has no code shared with Tomcat.
If neither is an issue, than yeah use tomcat by itself
See the Tomcat Connector FAQ for some information. For modern versions of Tomcat, the performance difference is much smaller than it used to be. For a low volume site, there is no reason that you cannot supply all content with Tomcat.