There are some times in which you need to come to some extreme solutions. Having two days of trials without success to have a portlet running in a local Tomcat with Day portal I came to the following solution.
Shortly why I came to such a solution? I needed to work on some CSS on a portal solution, and the development cycle was taking too long. I had to commit to svn, run a teamcity build which deployed a war to weblogic to finally be able to test my CSS changes. Far too long.