I think it should be worth noting that it is Keirsey, not Myers-Briggs, who perceives all SPs as hedonistic. "Gifts Differing" paints a very different picture of the ESPs by stating in her first sentence that "The greatest strength of the Se types is their realism." She goes on to say, "They do not uselessly buck the line. People of this type may prove to be remarkably good at pulling conflicting factions together and making things run smoothly."
I am not sure whether this coincides with this thread, but it has made me appreciate Berens' theory that the commonality of Se can provide for two sets of SP types. Those who may appear as painted by Keirsey and those who may be perceived as painted by Myers-Briggs. Clearly the latter would make for conservative types. In consideration of Myers-Briggs' descriptions, I can see ESTPs, ESFPs, ISTPs and ISFPs mistyping and looking like ENTJs, ENFJs, INTJs and INFJs respectively, in particularly since the Se combined with Fi/Ti can easily give an appearance of Ni-Te and Ni-Fe (or vice-versa). Just my thoughts and clearly my own humble opinion.