Well hopefully this can be mitigated by taking him out later in games with a defensive minded replacement, which Maddon seems to have done a few times already.
People keep bitching about his velocity on Twitter. Not sure if legit I've seen him hit 92 a few times on the Cubs broadcast and 88-89 pretty consistently.
And with Javy on leave it's not like they can call him up and do a Alcantara/LaStella 3B combo, gonna be interesting to see the reason someone other than Bryant takes Olt's spot.