That's a heck of a collection of Italian auto's. Not so fond of cigars - my asthma kicks in too quickly. I have a few Benchmade 'out the side' auto's, from a dimunitive <2" 3150 Impel to the 3.7" 9555, but only one 'out the front' auto, a MicroTech Ultratech. To be blunt, they are novelties. I don't even like carrying 'assisted' knives - as I have many easy to open knives. Great conversation pieces, of course.
I love Buck 110's - and have an assortment of their Custom Shop variants. There is no way a one-armed fellow should carry one, however... it'd be as useful to him as one of those early red LED digital wrist watches! Many great examples from Benchmade, Kershaw (and ZT), Spyderco, etc, exist, of course.
Stainz