it's possible through csv exporting but not directly, pwsafe does not understand the password exorter format so autoit has to come in between to rewrite the header and create pass entries and groups so pwsafe can import
first download this file:
http://kmext.sourceforge.net/files/kmcsv2kpass.zip
(source is included)
extract kmcsv2kpass.exe anywhere you like but preferably in keepass folder since it's made for it
to export, open password exporter from tools>privacy and click export passwords button. this will open save dialog, make sure to select csv format from type dropdown and click save
now double click on kmcsv2kpass.exe, this will open open file dialog, browse to where the exported kmpasswords csv was saved and open it
kmcsv2kpass will process the file and when done it will display this message
after that open [wsafe and click on file menu>import from text file
this will open import settings dialog, make sure to select comma type(default is tab), select comma not tab
then an open file dialog will open, select csv from type dropdown and browse to where the fixed kmpasswords csv is saved
pwsafe will import all kmpasswords and they will be all under one group:kmpasswords