I'm going to assume you're also using a safety cage during the inflation process?
My old school tire guy runs a large truck mobile tire service business & he is used to beating 22.5'' tires off of the rims of large commercial trucks on the side of the road with nothing but a big sledge hammer, a pry bar & a spray bottle of soapy water.... needless to say, mounting my COE tires were a piece of cake for him.
No safety cage was used but there was one at the shop. My tire guy told me he wasn't worried 'cause my rim components were properly prepared. He aired them up while they were laying on the ground... which takes me back to all the false paranoia surrounding 3 piece rims.
Which reminds me of this gem.... this is how todays "Highly Trained ASE Certified Mechanics" use the safety cage LOL