I have both and have tried to balance the two…what I end up with are two large bills instead of one. The propane is the main source with wall furnaces but each room has one of those electric heaters that look like wood stoves. They work beautifully. They have a fan at the bottom so feet stay warm. The propane heats from the waist up. If I run the electric ones all the time, I get a bill of about $300 a month, but stay very warm. At the new prices, it will cost me $1,000 a month to heat with the propane. I switched to electric water heater some years ago. This house has ductwork for central heat but that did not even begin to keep it warm, so I switched to wall units. The only thing green about this house is some of the trim paint.
When I built my new house in Oklahoma, it was all electric. I much prefer it. You don’t end up with gas scum all over everything.
By the way, you might note that Westar has a few extra charges as well. In fact, two-thirds of my bill is extra charges.