>>3199803Saves you on lenses as well.
The story goes that mirrorless crowd went for stabilization. Most of them decided on stabilised lenses since it gave better results. Olympus ditched it and worked on in body stabilization instead. They have no stabilization on lenses, so lenses are cheaper to make and give them higher profit margin. In the process Olympus caught lens stabilization in quality, and even started showing some advantages, so everyone else (really only Sony, Pana), with Fuji as exception (they have no ibis, every lense has stabilization) put ibis in some of their models as well. Usually pricier ones, but it's there. It's a bit of a mess for Sony, Pana as you have stabilised lenses plus ibis. They still need stab lenses for their ibisless bodies, but they may both ditch it in the future. Stab on lense vs stab on body isn't big difference in quality, and when you have them on both as they nearly cancel each other out, but there is another really nice advantage of in body stabilization. It also helps with vintage lenses! m4/3 is decent at putting old lenses on it, adaptor and you can style with vintage leica that you spotted on some auction for quarter what it went for. Old lenses have no auto focus, no stabilization, but ibis will kick in and give you really nice results.
So if you do go for m4/3, ibis is important. If you get Panasonic cam without ibis, you may forget Olympus lenses as they won't work as well.