How does it feel like to be outside a flying airplane?
It won't be pleasant.  The main result of being exposed outside at altitude, besides the obvious hypothermia, frostbite and hypoxia, will be bruising from the 280-ish knot slipstream (it's the indicated airspeed that matters as far was what you feel, not the true airspeed), and injuries from being flung around by any turbulent flow you are in. Most of your skin that was exposed directly to the slipstream will have bruising.
When I was skydiving I tried tucking in and diving straight down instead of the normal 120 mph flat freefall position, just to see what it was like.  You accelerate to about 150-160 mph.  It got to be a bit uncomfortable at that speed.
A friend's dad once ejected from an F-104 while going just below transonic speed, and I got to ask him about it back in the 70s.  He said he was purple from head to toe except where his face was protected by his helmet visor and oxygen mask (except for the purple mask outline bruise on his face).
Even better, you can read about this British Airways BAC One-Eleven driver, the one who got sucked halfway out the windshield when it blew out back in 1990.  He had broken bones in addition to the other stuff, from being beaten against the fuselage like a rag doll the whole time.   The crew were able to hang on to him because his legs were still hooked around the windshield frame, providing some mechanical advantage for the crew members trying to hold him in over the airstream trying to pull him free.