100% wood for heat, BUT I still have the propane furnace t-stat set at 50 degrees F for back-up. From Oct. to June the OWB heats the house and the DHW. In the summer we like the windows open and the wife doesn't like catching "whiffs" of the "smoke dragon" so we shut it down. The dryer is still propane so that uses a little bit and there is the 3.5 months that our hot water is heated by propane as well. The 300 gallon tank was filled last Sept. to 95% and I just checked it last week and it was down to a little over 87% (not bad for 13 months IMO).
Since this poll is about wood usage vs. fossil fuels I should also mention that I still use fossil fuels in order to heat my house entirely with wood. There is, of course, the chainsaw gas and bar oil, but also the older I get the more the diesel tractor gets used to move wood and clear a path to the OWB. My electric bill also jumps quite substantially because of the diesel block heaters. The truck eats a majority of the winter juice, but I'm sure the tractor is around $10-$15 per month. Still beats the heck out of $3,800-$4,000 per year for propane. It's also hard to put a price on a 74 degree home on wood vs. a 66 degree home on propane. That 8 degrees of comfort and no thermostat wars is pretty much "priceless." Having a warm workshop and garage is also "priceless," considering I snowmobile and plow snow in the winter months.