We have about 20 Coleman lanterns between hangar, house, and cabin. Essentially grew up with them as both the emergency light source and light at the cabin. I think I've still got some from the old man of '50's vintage, most are 70's - 80's but the fleet age is getting younger as we keep busting globes and so forth.
They do put out quite a bit of light and heat, but can be turned down. While the mantles are delicate, they're at risk from abrupt jarring rather than smooth movement...we use a lit coleman for the evening walk around at the cabin before closing up for the night and haven't had any (IIRC) mantles collapse.