The price you pay for this is a very high stall speed and an astronomical engine out sink rate of over 2000 feet per minute.
At 800 ft AGl on take off this gives less than 20 seconds to make a decision on a course of action, respond and then land the aircraft after an engine out on take off.
If you have an engine out in one on take off, it's probably better to land straight ahead and take your chances. Almost every attempt to turn back to runway to land after an engine out on take off that I am aware of has resulted in a stall-spin crash with subsequent post crash fatal fire.
Cruise speed of 300kts plus is cool but I am not a big fan of the Lancair IV given it's high stall speed and power off sink rates.
Looks like the one in the front is PT-6 powered, unless Williams or Garrett makes a reverse-flow version also.
Having a turbine engine quit on you during takeoff or climb-out is much rarer than with a piston engine, isn’t it?
Was Appleton’s Lancair turbine powered?
Based on the news photo of the crash and the Google Maps view, it looks like he was taking off on 10L or 10R and just stalled and dropped near the end of the runway. I’m going by sun angle and background, although I wasn’t able to match the background exactly. In particular I couldn’t find that dome.