I will say though that finding and obtaining a grail is an amazing feeling after a long hunt. Afterwards, you get to relax and enjoy the history and culture of the hobby in a different focus.
Wow!! I can totally relate to this. As a climber in his 50s, somewhere in my 40s, I got to a point where summits honestly no longer mattered (most of the time). My focus has shifted and happily so. I don't mind summits, if they happen, but the joy of being in the mountains has settled into the joy of simply BEING in the mountains and it's become less goal oriented and more open to exploration and side trails and nooks and crannies and wildflowers and lichens and...
There are aspects of this thread that I can appreciate while still not fully relating to.
Pirsig said, roughly, that quality is that which gives you peace of mind. I started carrying a knife when I was 8, which was nearly 50 years ago and can report that I've pretty much found peace of mind in carrying knives. There are small stars you can only see when don't look directly at them and in the same way, my peace of mind in carrying knives come from 2 things that are not really knives.
Couple of things about me... My first knife, at the age of 8, was one of a long string of Ulster BSA knives. Be prepared! Loved the tools and the 5 stitches I got in my thumb that summer. When I was in high school, I saved my paper route money and ordered a Buck 110 from the Herter's catalog. But I could never get a peace with carrying it. Then followed a long season of multi-tools and eventually an Opinel that came with some traded bike parts.
If you're interested in stories, you should also know that I grew up in a very conservative Nazarene culture in the mid-west and while I've shed most of the particulars of view, I maintain most of the general principles. Hard core Nazarenes back in the day wouldn't wear any jewelry of any kind, including wedding rings, as they were considered to be "worldly dress". I wear a wedding ring and a watch but my watch is a Timex and my pants are Wranglers and I'm wearing the same brown belt I bought just after I got married 30 years ago, which is to say, my aesthetic sensibilities are still very much in the understated (dour?) Nazarene/Methodist/Mennonite tradition. So, while I can deeply appreciate the artistic excellence of the some of the Grail knives shown in this thread, my sensibilities lie more towards the wooden Grail, as depicted in Indiana Jones.
So, the 2 pieces of the puzzle that aren't knives. First, I finally solve the problem of big single blade folder (my preference) vs Boy Scout knife (the needed tools) when an old timer at work told me to take my Leatherman Micra off my key ring and put it in my weak side pocket. A few weeks later, I needed to open a beer at a Vermont wedding (like I said, I left behind Nazarene particulars), put the Micra in my pocket and never looked back. This move settled, once and for all, my nagging need to have a Scout knife on me, which is good, because I don't really like the tools on a Scout knife nor do I like the size. With tools now settled by a negligible ounce or so in my off pocket, I am free to pursue my love of single blade folders with no worry or need to compromise.
The second piece of the puzzle really came at the beginning of this year when a work mandate to carry a smart phone caused a reshuffle of my pockets and I finally took the advice to sew a seam up my right rear pockets in all of my pants. This has opened the door to rear pocket carry and with that, a bunch of larger single blade folders have become possible to carry that just didn't work well in front pocket carry. Belt carry has never worked for me, ever, for anything.
I don't have a Grail knife but I've found a combination that works for after nearly 40s of exploring so, I'll call that my Grail. I have the luxury and I do consider it a luxury, of rotating through several large single blade folders on a regular basis. They all have some aesthetic appeal to me and I enjoy each and every one of them for different reasons. I don't expect to find a single "one" in the bunch, but if forced to live with one, it would be the Opinel #9 or #10.
Some of my Grail combos...



