Look impressive - for a airshow display. My personal surviving instinct tells me - don't try this with a big birds. Me, personally, from the experience, am always taking in calculation - what else can go wrong.
Even in perfect conditions - with a nice, smooth infinite big landing spot right in front of me - would never play fool of myself and odds of fortune to do something like this.
But, again, what can I know? I am bus driver.
M