I havn't tried pieces of fruit but I often make walnut bread - I add
walnuts for the last 1-3 minutes and they come out OK; I might find a
few small pieces of walnuts in the finished bread but almost all are in
one piece

You can also adjust how close the roller can come to the side of the
bowl. I usualy don't restrict it at all, but you can do that. That
should keep any soft fruit pieces from being squished.