[Zope] Efficiency of "Script (Python)" versus External Method

Is there a difference in the efficiency of a function as a "Script (Python)" Zope object versus an External Method? The use case is that I need to run a fairly simple function (an implementation of the Levenshtein distance algorithm) over a result set in the range of 30-40k records. Are the two implementations close enough that I should just not worry about it or would you expect I would see a significant difference between the two? Thanks, -Andrew ----- andrew@clearwired.com / http://clearwired.com