Product review (3 stars): You give up a lot in dryer functionality
I've been using this machine for two weeks.  Before buying this, I was using a top-loading dinosaur with a relatively new, high-end dryer. I'd like to be able to congratulate myself on buying this space-saving, energy efficient machine. But it's not that great.

I've always been able to get my clothes clean to my satisfaction. I've washed dress shirts in a sink with some soap, and been satisfied with their cleanliness. So, while this machine may or may not get my clothes super clean, I really don't care. What I do care about is not having to get my iron down from its spot on top of my refrigerator.

Until recently, I had been able to avoid using the dreaded iron by carefully managing my dryer, which had multiple temperature and time settings, as well as a steam cycle. By comparison, my new LG washer/dryer combo machine feels like throwback to the clothesline era. I'm sure that there's a way to control both the time and temperature of the drying cycle, but it's certainly not intuitive. As several commenters have noted, you can't just "dry" your clothes. Instead, you have to set the machine to "drain and spin" if you want to dry your clothes without running a wash cycle.
That doesn't mean that this machine can't dry clothes, just that it not as easy and, perhaps, not as precise as a separate dryer.

My experience with this machine is that if I use the presets, my clothes come out sopping wet. So, I invariably have to manually set the drying time to 1.5 to 2 hours. A small load will dry in 1.5 hours. A small/medium load will dry in two hours. I still need to experiment with drying medium loads. Yes, I've owned this machine for two weeks, have done laundry on a daily basis, and am still figuring out how to use it.

If you have the patience for the learning curve, have extremely limited space, or are living in a super-insulated house and don't want to vent all of your conditioned air outside every time you dry a load of laundry, this could be a great machine. But if you have space for a separate dryer, and don't want to have to attend night school to figure out how to get your clothes dry and wrinkle free, you might want to stick with two machines until something more user friendly hits the market.