Force SVN update / checkout to overwrite local files

i'm planning to run (on my server!)

svn update

to update my LIVE website with updates. However, i'm worried about 'C' conflicts which will prevent my site scripts from functioning. How can I force the checkout / update process to overwrite all local files (on my server!)?

I know one solution would be to do this on a separate directory - any thing else more efficient?

i've looked at Force an SVN checkout command to overwrite current files

I dont have --force option