I get what the author is trying to say but thought I'd add a bit on the Ninja Wallet mentioned there.
I have a Pocket Monkey (http://zootilitytools.com) which is similar to Wallet Ninja and have been carrying this around for over a year in my wallet. I personally love this tool and will never leave home without it. Much like as Swiss Army Knife, this thing has been useful so many times for me. Admittedly however my most frequently used part of the tool is the bottle opener. Other aspects of the tool don't get used quite as often. However if I were to carry the rather large tool the author links to, it would not fit in my wallet.
gmu3 mentions the issue with airports. I travel very frequently through several different countries including the US and have never had any issues keeping this in my wallet. I've only been questioned once but they were okay with it and let me keep it. It's not sharp enough.
The Pocket Monkey is an easy conversation starter as well. Every time I whip it out to open someones beer because there are no openers available they are often impressed of how small and strong it is.
Disclaimer: I was given a Pocket Monkey (worth $12) free to review on my own site in 2013.
I have a Pocket Monkey (http://zootilitytools.com) which is similar to Wallet Ninja and have been carrying this around for over a year in my wallet. I personally love this tool and will never leave home without it. Much like as Swiss Army Knife, this thing has been useful so many times for me. Admittedly however my most frequently used part of the tool is the bottle opener. Other aspects of the tool don't get used quite as often. However if I were to carry the rather large tool the author links to, it would not fit in my wallet.
gmu3 mentions the issue with airports. I travel very frequently through several different countries including the US and have never had any issues keeping this in my wallet. I've only been questioned once but they were okay with it and let me keep it. It's not sharp enough.
The Pocket Monkey is an easy conversation starter as well. Every time I whip it out to open someones beer because there are no openers available they are often impressed of how small and strong it is.
Disclaimer: I was given a Pocket Monkey (worth $12) free to review on my own site in 2013.